I dont agree that tubing is pointless with a size 8 hook i believe it is down to the hook pattern . I'd use it on a size 12 if i thought it might improve the hooking potential .
Also , for what its worth , i dont believe in that palm test ( or thumbnail test for that matter ) .
Hooklength behavior underwater cannot be the same as on your hand .
Mind you thats what forums are for , to air differing opinions .
Lets see how the thread develops si .
Cant understand why your mate would say your hairs are too short and yet offer no explanation or solution ?