Why?
If we put on two traps no penalty? That isn't logical.
With all the good will in the World, and this is coming from a non-compliant personality type.....
Why should anybody give your dad a special dispensation for being old. 70 year olds are racing F16 competitively in Asia.......
It's like amputees wanting to race track at the Olympics....somday the tech will get faster than real people so why bother because they HAVE to lose to race........it seems you want to define a wing that is not trapped off as a hiking rack....
and for sure, if your dad can't trap, he sure can't hyke as it is WAY harder work.
let it go and find a more realistic fight.