I don't have a park model but when I bought my 31' TT it was on a seasonal site for 3 years, the setup they had was pretty good. It didn't take too long to remove either. They had jacked it up (so most, if not all weight was off axles) and place cement blocks under each corner (under retracted stabilizers), to level it properly they used some concrete pavers where needed. I used a 12' PT 4x4 and two jacks to lift the rear and remove blocks, the front was a little easier thanks to the tongue jack. It was nice and solid, better than any stabilizers. I think if you turn your blocks (not parallel with length of trailer) and get the weight off the axles you may have better results. Good luck!