If you want to take out the wigglies then any of the JT Strongarm type stabilizers will work. I DIY'ed my own on my last TT and did the same for our 5'er. The fore and aft movement can be taken up with good chocking like BAL. Or if the JT types have the fore and aft arms. But the side to side wiggle will only be cured with JT type stabilizers.
If I tighten the fronts only then go to the rear and push on the corner in a side to side fashion, I can still make the 5'er wiggle some. Tighten the rear brace and it's rock solid.
What's happening is when the front of the trailer is held up by either a tongue jack or the 5'er stabilizers it will still move because of the tires sidewall flex. A simple test is to just clamp a diagonal brace across the front then go push on the rear. It will still wiggle. Now clamp a diagonal brace on the rear jacks and it'll be solid.
Tripods don't help because the tires still flex. It will help only the fore and aft movement. Unless you have a MorRyde type king pin then it's virtually worthless.
Now if the 5'er is built on a longer weaker frame because it's either cheap or it's one of the 'lite' versions then some up and down frame flex can occur. That's when you need additional jacks near the tires.
