I’ve always put triggers at bottom on both 330 and 280 beaver sets. I catch a lot more by the front feet in 280’s. I don’t think it’s always from attempting to climb over them. Since the 280 is a tight beaver fit I’m thinking of triggers spread in a wide T at top hoping to get more of a duck under than crawl through. Does anyone use this configuration on square 280’s with success? What about raising them a couple inches with some sort of stabilizer?

A wide T and moving the trap up a couple of inches might do the trick. Something you might want to consider is camouflaging the trigger. All of my bodygrip traps get dipped in rusty metal primer/acetone mixture. Once dried I do a couple of random stripes with three different camo colours of spray paint, making sure that my trigger gets at least one color on it. I have found this increased my catch ratio drastically. It breaks up the outline of the trap and trigger, thus they are more likely to fully commit to the trap.

Also, I am going more with the trigger on the bottom and it looks more natural. Love them 280s!

There’s a big difference in packing 280’s and 330’s. They’re about like carrying 220’s. Most places they can work where a 330 does. I have more 280’s than 330’s I believe. I used to camo paint all my bodygrips, especially the triggers. That’s a good thing to do. There are places of course 330’s, 1216’s, 660’s are better.

IMO any body grip trap triggers should almost always be on the bottom, ground level jaw, with the general exception being diving water sets. I don't think animals like ducking under something any more than I do, but will push through small twigs or grass. Also, when the trigger is placed on the upper jaw hanging down the dog and trigger wires, on single jaw traps, end up on the back of the animal where the best fur is and can possibly cause serious fur damage. When set on the bottom jaws the dog and wires are always falling away from the opposed closing jaw and thus the trigger wires cannot hang up on a jaw.

I have a different take on this. I use the T triggers on the bottom like guys above do but I use it in shallow water. If I put the top of the T right under the surface I get a lot of head / neck catches. I also get rats pushing off the T and getting caught.
For me the T does not work as well as a circle in submerged sets. A 5'' circle centered in the trap can be set upside down, right side up or on it's side. A circle centers the beaver and other animals and I get good solid catches with quick dispatches consistently with this trigger over the T. We have a lot of ditches here and the circle works great in smaller water like this and in runs. It's more work but since we have otter here it helps a lot on them also.