Also, RR, remember that gas springs can go higher than 90 lb capacities without too much increase in cost. I like this idea.Make this out of metal do away with weight box,and make a tongue to fit in traylor hitch to hold it in place??????
The best part about a gas spring is that unlike a torsion spring or coil spring, it maintains a constant lift pressure as it expands. It doesn't weaken, and it doesn't start out too strong.