Jeet Kune Do is amongst the martial arts for which generally there are no competitions held.(* I'll get to some exceptions later).
The overwhelming majority of people training in JKD (and that includes those training in the JKD Concepts approach) tend to train for personal development, and there is a wide spread view that as JKD is designed for the street, no rules, 'any thing goes', you couldn't possibly hold competitions because there are multiple techniques / actions you'd not be able to do as it would injure your opponents.
Yet we do train them on a variety of targets, and also with some restraint, on your sparring partner whilst wearing the appropriate protection equipment.
The main issue is not so much that you couldn't conceive a competition, but by stripping it back to make it safer and introduce rules (amongst which how to award points/ scoring system) you inherently alter the essence of the art, and it is in danger of looking like a kickboxing contest, or any other martial arts tournament.
*This is exactly what has happened to some (dubious) Jeet Kune Do 'associations/world councils/fill in colourfull name' that have attempted it before and still hold tournaments. (they are predominantly located in Asia, most organisers/participants have no link to actual Jeet Kune Do instructors that have a direct lineage to any original students.) . The motive of these 'tournaments' seems unclear / vague to me, other than a vehicle to 'stroke' the ego of the founder of these organisations, and very little to do with competing in JKD.. There are some good martial artists amongst the competitors, but from I've seen I have not witnessed any JKD, but rather their structure etc looks more that of a Taekwondo fighter or kickboxer.. I posted some examples at the bottom of this article.If a competition is held at all at any point, some real clear rules need to be established that ensure JKD remains recognisable as it's own art, not just 'anything goes'... The fighters should be encouraged to fight strongside forward, use minimum 80% lead weapons, and scoring should reward elements like trapping (for example a pak sao - backfist combi should score highly) so that people will actually use it and show off an element of JKD that isn't present in other (traditional) systems.
What about fingerjabs? These could be given their own category, where participants have to score on a moving target within a certain time (maybe wearing gloves dipped in an ink or similar so that a clear visible mark is left where fingerjab landed) and speed and accuracy can be awarded in this way.
Add the points from the fights to the points awarded to the 'finger jab' element, and the highest scorer is the overall winner.
It is going to be difficult to organise and get sufficient participants however. There are not many genuine JKD schools compared to other martial arts. That said, JKD students could still participate in other (open) tournaments, restricted to the rules of that tournament, if only to experience what it feels like to be under pressure in a fight (a higher level of pressure than you would experience normally at the school, where sparring is done to help eachother learn, not to win a match).
Thoughts? Here are a few links to a 'JKD' tournament: (copy and paste the text in your browser).
https://youtu.be/MlAOXT2JkIE?si=VsJTnC-RqF2LCrHk
https://youtu.be/TqJSuNJ_2J4?si=xiTD0HWtkUolTfDa
https://youtu.be/HPUEw8MiZ7A?si=ubD49lCRriGCK2Mh
https://youtu.be/9_HufeuhsdI?si=TMtKKy7CaG_1z2KV
Walk On!