Pastorp - Like you, I gave it up to to shoulder pain. I'd already dropped to 45lbs, but can't even shoot that much now. Gave all my stuff to a young man I know. Now, I'm itching to try again. I'd like to have a longbow that pulls 38-40lbs. That would limit my deer shots to real short distance, but I sure miss being in the woods with a longbow.
Concerning holding at full draw, I could never do it. I hold about 2 seconds, long enough for me to know I've accomplished concentrating on the spot.