the bear II wrote:
We used 4 jack stands like used on mobile homes like these:
http://www.etrailer.com/Trailer-Jack/Ultra-Fab-Products/UF48-979003.html
They remove all bounce from the frame and suspension. Lower the front place two at the rear, raise the front just past level and place the two in the front then lower the front onto the jack stands. Place one under the frame on each side at each corner. Rock solid.
Considering your trailer is a single axle, I think the above (
link) is a good choice. I have a set of 4 of these and they do help a lot. In a lot of ways, I think they are more stable than the scissor jacks factory installed on my camper. The scissor jacks have a bit of side ways motion also. Mine are turned at a 45 degree angle from the frame. I think by turning them it's suppose to help prevent direct side-to-side or front-to-back motion. When you look at all 4, they are aligned in an X pattern. Still I get motion. But when I add the self-standing jacks (above link), it seems to reduce the movement a lot.
We don't have young kids with us any more, it's just the wife and I and the dog and the cat. So movement does not bother us any more. It's kind of like being on a boat. You know there is movement, so you just accept it. Actually, a little movement when the wind blows is kind of nice!