I have two 4 ton bottle jacks ($20.00 each at Harbor Freight) I use them as mid trailer stabilizer jacks under the frame just forward of the front axle. I also carry several
2 x 8 x 10 wood blocks for use under stab jacks, tongue jack, etc.
2012 Toyota Tundra 5.7 Litre DoubleCab
6 speed, 4.30 Limited Slip, Tow Package
2013 Jayco White Hawk 27DSRL
2010 Jayco JayFlight 26BH sold
Yamaha EF2000is Generators (2)
1996 Honda CB750 Nighthawk