Thus far, I have always had pretty good luck finding a flat area to camp. So my most recent version of rear stabilizers has just two settings. All the way up, or all the way down. I then adjust with a few pieces of plywood squares in the back, and level it off using the front Jack. But its definitely stable.
The pins hold the stabilizer in place, and the bolt is used simply to tighten it up and avoid any rattling.
So far, not enough testing to know if it will hold up. But I like anything that is easy to clean, simple to use, and does not require anyone having to get underneath the trailer.
I'm going to replace the bottom plate with a round version because I sure don't want my wife to ********** her knee on the corner at 2 AM when we leave the trailer hitched to the vehicle and do not drop the stabilizers.