In my opinion double jaws are a waste of money if you think they will stop a coon from chewing. Double jaws were created so that when the coon or skunk chewed off It's toes there would still be enough foot left In the trap to hold that animal.
Use a #2 sized trap for those rats get a high leg or shoulder catch and even If that rat can't get to deep water It will still be there. And the coon will go to deep water and drown.

I caught 11 coon In coyote sets this fall and not one of those coon chewed on It's foot.

Stoploss Traps

Put a stick into the water sticking out of the water so the muskrat will get tangled up before he has time to wring out

1 1/2 coil spring staked deep with second stake for tangle or same trap on slide set up is what I use now. I have caught lots and lots in #1 and #11s staking deep and tangle stake out deep.

If you trap bed is sticky mud sometimes a Muskrat cant pull the trap out of the mud and get to deep water. In this case I put a wad of grass under trap so it isn't stuck in the mud. I like at least 18" of water, deeper the better. If bottom is soft you can make it deeper around your tangle stick with your boot or shovel.

Good luck out there!

I have used almost totally 1 Victor stoploss for decades with very limited loss and have held more coon than I would like to and also had to release several otter as well. My other water trap for rats, mink and coon is and would be a 1.5 coil spring trap. I have almost no experience with double long spring traps. One of the reasons I like the stoploss is that many set locations do not allow the rat to get to deeper water and the guard spring really is a benefit in those locations. The one advantage with 1.5 coils s they would catch the rat further up on their leg and thus more bone and strength.

Bryce

Set a little deeper and catch the rats in hind leg, they rarely wring out of a hind foot catch.