JT's Strong Arm Jack Stabilizer system

Look at the Steadyfast system also. Only three handles to turn. Took us three hours to install and works great.

I installed them with 4 up front, 2 in the rear. Not sure it really matters, as long as you have a lock in each direction. Ours work great. Best upgrade yet.

First search this Forum for `stabilizer' or `strong arm' or `strongarm' etc. We installed a set on our TT with two on either side in the front and back; total four.
Be sure to lather all of the moving parts with Corrosion X or some other anti-corrosion spray as the metal parts tend to rust being in the path of road water and other crud.
I wish they had the option of SST moving parts. I have also had one or two of the Tee's rust and have replaced them with hex bolts. Would also like SST Tee's but haven't looked very hard for them.

My front jacks are mounted diagonally to the camper with no good way to attach a locking arm to the frame, so I mounted them both on the rear jacks. I've since determined the "side to side" locks have little, if any, affect. I imagine I'm going to remove the side to side locks and leave the front to rear ones.

I put two at the front and two at the back. Worked for me.