I play with the strap rather short.

One reason behind this, the more you get the strap low, the more you'll use your elbow which is bad.

Elbow problems will haunt you down with time.

I always pick by making movements from the fingers or wrist, I try to keep the elbow motion to a minimum. You'll be faster too by using fingers and wrist motions. Less pain, faster picking. Get a beer and you're in heaven lol

Anyway that's my opinion