I have had one of the tripod stabilizers that came with my previous Suites fiver--very heavy and awkward contraption. Used it once, decided it did no good and sold it.
I think the ones your dad had work best--there are several designs available--and have seen positive reviews on them. And, they stay on the jacks and not in the basement or in your pickup.
2016 Tiffin 40 QBH
2015 38RSSA, traded
2005 TK3 #1869, 10 yrs of memories,
2017 F450 KR--one more Ford is it
2009 F450 4x4-died; 2010 F450-retired