If I want to shoot at the rifle range, I am one of those that gets there early to get the bench that I prefer. Otherwise, I'll try going after 12:30 pm or so on the weekends.
If I have a few friends coming, sometimes I'll hold one additional bench. But they will usually get me breakfast along the way so they don't have to get up as early.
I personally shoot and get out of there. Yeah, I'll take breaks in between strings, particularly if I am shooting my bolt gun, but usually no more than about the last 5 minutes or so of the string.
It does bother me when I see guys shoot one, then just walk about for the rest of the string and talk story with their buddies. If they are going to do that anyways, why they can't just share a bench with their buddy who is doing the same thing is beyond me. But like anything, it's those few who push things and are somewhat inconsiderate who ruin public facilities like Koko Head. That's why I enjoy shooting at Schofield when I have a chance.