It's interesting to evaluate the lives of certain individuals who achieve levels of success on Earth and see if they fit a pattern for matching criteria that may demonstrate they were HET. This is only an observation and/or speculation. There obviously is no way to confirm it. This is a key reason you should focus on EA Group Mode before spending time trying to evaluate individuals as possible HET. Over time when you are aware there are a vast number of Hetlau you see consistent themes running through certain individuals lives that make you wonder.
The criteria you are looking for is extensive and can be different with each individual and the circumstances that surround their life as well as the timeframe from which they lived.
One test is can you say the persons name and will most people know who the person is. The reason this is a criteria for a person who might be a HET is that HET control Earth by controlling society and they cannot have public figures walking around aimlessly voicing their opinion. Though they want it to appear that way the one subject matter that must be reigned in is Extraterrestrial. As HET become public figures they know to keep their comments within certain boundaries on the subject matter of Extraterrestrials. EA that rise to power have to be informed of this and told to maintain these boundaries, such that they become complicit in what is going on.
Another reason public figures are a criteria for a HET is that HET are privy to a vast sum of knowledge about how life on Earth works. Many existed before Earth existed and are taking part in the plan or ETA that is being constructed on Earth. They have morphed and/or polymorphed themselves down here. This vast sum of knowledge, taking part in the plan, and societal connections enable them to achieve success on Earth much easier than EA can.
You can look for images of them to see if they are making the hand gesture. Are they appearing in photographs with other individuals they clearly know well that are making the hand gesture as well? Trying to ascertain whether someone might be a HET is sort of like being a detective or private eye, you are constantly looking for clues because no one is going to admit it or help you figure it out.
You can also try to read their names. sometimes this will add confluence to the clues. For example using wormation we get:
HUGHES = HES HUG (enagram)
HES =HE IS
H = Humanoid
U = 21 (alphanumeric)
G = 7 (alphanumeric)
21 - 7 = 14
14 = 1 + 4 = 5
5 = E (alphanumeric)
E = ET (ecronym)
HUG = Humanoid ET or HET
Hughes =HE's HET when translated using wormation.
This still doesn't mean he is HET but it is interesting to point it out and it provides more clues which reveal those repeating patterns that provide a preponderance of evidence since there is lack of corroboration.
Other criteria that surround an individual may be unique to each person. For instance, with Howard Hughes you notice the appearance of a UFO in the Howard Hughes Memorial Award. HET like to leave these hidden clues to make it easier to reveal they have been here the whole time when disclosure occurs.
Another important event in Howard Hughes life was the Spruce Goose's attempt at flight. To most people who do not understand Flying from an Extra Terrestrial perspective the Spruce Goose flew the moment it's body separated from the water in the Long Beach Harbor.
To people who understand flying from an Extra Terrestrial viewpoint, they know the plane is just transitioning it is not flying, there is a critical difference. What is happening is the plane is operating in a phenomenon known as ground effect. The area between the wing and the ground and/or water, in this case, is creating a compression effect which is providing additional lift. In order to actually be "flying" the plane needs to rise to 160' in altitude. That is 1/2 the distance of the wingspan of 320 feet which is the defining zone for ground effect. The plane only rose to 70 feet.
Until it reaches and exceeds 160 feet you don't know if the wings can actually generate enough lift for the plane to actually fly. So what you realize when you know Hetlau is that there are people on Earth, HET, and complicit EA that know this but just don't say anything because they know to manage and or control their comments.
There are EA who know this that don't know Hetlau but regardless are not going make an issue out of this either because they don't want to ruin their aviation career or they simply don't want to be insulted as someone suffering from a delusional disorder and/or schizophrenic break from reality for trying to raise this to the level it needs to be evaluated at.
This event stands out enough to be viewed as misdirection as well as a hidden clue to be revealed after disclosure. It is also symptomatic of why the Ufology community cannot resolve the UFO phenomenon, they simply don't understand Flying well enough. Otherwise, they would be pointing out most UFOs don't have wings, and events like the Spruce Goose were not an example of flying.
You can even see it in the Wikipedia explanation of the event:
"After picking up speed on the channel facing Cabrillo Beach the Hercules lifted off, remaining airborne for 26 seconds at 70 ft (21 m) off the water at a speed of 135 miles per hour (217 km/h) for about one mile (1.6 km). At this altitude the aircraft still experienced ground effect. The brief flight proved to detractors that Hughes' (now unneeded) masterpiece was flight-worthy—thus vindicating the use of government funds. The Spruce Goose, however, never flew again."
Notice how it says the aircraft still experienced ground effect. Then it goes on to say "brief flight, flight worthy, and never flew again". So there is no understanding that transitioning is a state of aerial maneuvering that is different than flying. Similar to how gliding is a state of aerial manuevering but technically you are not flying, you are gliding. That is why these words exist are used to describe what is happening in the aerial realm. To most Ufologists this is just over analysis and minutiea. It really is key to understanding the UFO phenomenon and in this case its a possible clue to Howard Hughes being a HET.