I made a set based on the Steady Fast and they work really well. I have 3 T-handle screws that I loosen, level the 5er with boards for side to side and then front jacks. Lower the rear stabilizer scissor jacks. Then tighten the T-handles. When leaving I loosen the T-handles and raise everything the snug the T-handles so they don't fall out on the road.
No wiggle, everything is always in place just loosen and tighten the T-handles. I have 3 slides and this stopped the shakes.
One for side to side in the front and one in the rear. Then a second one in the front for front to rear.