I actually did put a few in with the females. They were so big I figured it was time, and it also freed up some space for the younger ones. Right now I have all of my guys inthose "turtle tables" that I have set up in my basement. You can see them on my site by clicking on "Turtle Pen" and then look for the link that says something like "See my basement set-ups"
So far they are doing fine with the adult females. I wouldn't dare put them with the adult males. They would have a feast with them.
I don't have any "handicapped" turtles right now - lol