11s will hold anything that gets in them. They were my coon workhorse for many years. Ive held beaver, coyotes, bobcats, fox, badger, coon (fron or back foot) and everything in between. Tenacious holding power.
Double jaw probably not necessary woth the small jaw spread for sure...but the stiffer double jaws don't bend when you got a coyote or beaver in one either.
DPs are OK, fast and easy to set, but miss a lot of coon in them. Had them go right by a DP under their nose on a trail only end up in a 160 or foothold a little ways down same trail. A 160 will tell you what direction they just came from.
Need a variety of coon tools to clean up coon at a location especially problem coon. Right tools for right job always...but variety of sets and baits or blind sets will show you quickly what you have been missing if you are a DP only guy. Long liners running only DPs are numbers deal and playing the odds over many locations keeps the numbers up. Also keeps it fast and efficient, but they would admit they miss some at those locations but its an acceptable % to keep things humming in spirit of efficiency. Go in fast, easy to bait, low key, and big number type of set DPs can be. If you are running a smaller line like I do you need variety at your locations to maximize your results if the populations are there st those locations to be had.
Jim