myredracer wrote:
If you get the BAL Lockarm stabilizer struts, you only have to buy a pair of them and are cheaper. You might find a pair at the rear is all you need. I installed a pair at the rear only and it really helps. I mounted them to the underside of the bumper and get some fore/aft reduction in motion as well as side-side.
Adding a pair of jacks just ahead of the axle under the frame can help too. Having a larger surface area under the jack pads can also help on some sites, like a piece of 2x8. Some TTs simply have a weaker floor structure and frame.
I ended up using 5 of 6 I bought, one on the rear for side to side motion back there and 4 on the front. I've got a single axle though so perhaps a little more motion prone than a mid-length trailer with doubles. With the BAL Lockarms screwed down I can't move the trailer more than about 1/4 inch and I'm 6'3 250. It's probably the best mod I've done yet to my trailer other than the reflectix on the inside of the nose (wife was cold, unhappy wife is bad).