Gonna start trapping some beavers on my land and wanna know what traps you guys would recommend other than 330's. My concern with the 330's is the possibility of breaking an arm or hand. That said I'm looking for swim in traps for the beavers and not body grippers. Is there a huge drop off in effectiveness between the body grippers and swim ins?

you could use snares, blind sets, castor mounds, drowning sets with footholds
RR

How effective are they compared to the body grippers?

you mean hancocks? snares are simple,10 qqqqqqqor 12 inch loop one inch off the ground.set a 4 leg hold on a slide with a bag of rocks where they pull out.set lots of 330s never broke anything just make sure the keepers are on

This dude has his stuff together^^^^