I just bought a 97 Aljo 22' TT. I am new to the RV world and have a question about leveling jacks. I have seen stabalizers that just have a single leg and they aren't recomended for leveling a trailer, but the scissor jack style leveling jacks say they are rated at 5000 lbs each. Can these actually be used to level out my trailer or should I get the leveling blocks or just stack 2" x 8" pieces of wood? Any recomendations would be greatly appreciated.