I go to HD or Lowes and get two 8' PT (now I think they are called chemical treated) 2 X 10's. I cut each of them into two 3' and one 2' pieces giving me four 3' and two 2' pieces. I place a drawer pull out the end of all 6 pieces. The 3'ers are long enough to reach beyond the jack under the coach and still stick out enough to easily grab the handle. This spreads the load fairly evenly on the 2 X 10. If I am in a site that is not level enough I have the 2'ers to add on top of the 3'ers. If they get too far under the MH I use the awning stick to reach under and grab the pulls. I get 4 jack pads plus the extra blocking for under $20. The only problem I have had is with very soft ground, the 2 X 10 sank into the sand, I can only imagine what would have happened with just the jack pad or one of the plastic blocks. My MH is 33k, around 13 k front and 20k rear axle, placing that much load on 1 square foot (plain jack pad or plastic blocks) just seemed stupid to me. Spreading that over a 2 X 10 X 36 (513 square inches) seemed a better solution then the jack pad (well under 144 square inches) I did try 2 X 12's, they are more expensive and split easily so I have settled on 2 X 10's. Added features, they stack nicely in our basement, are easy to pull out with the handles and are a renewable resource, although not green due to the PT.
Dave, Bobbi and Fenway
2005 38' FDTS Alpine Limited, 2016 Jeep Grand Cherokee Limited
Cape Cod, MA