Stabilizing your rig is not necessary but doing so may make your RV more pleasant to be in. The smaller the Fifth Wheel or Travel Trailer the more it can benefit from stabilizing systems.
You
might want to have a few six to eight inch long 2x6 blocks and some stabilizing
jacks. How many of each will depend on the size of your RV and how stabile you
want it to be. The blocks are placed under the jacks to give them more support
if you are parked on soft ground or if the jacks are too short.
Plastic
'blocks' are also available and have some advantages over wood blocks. The
biggest advantage is less weight to carry. They are also stackable and have a
larger surface area.
Some
travel trailers and fifth wheels have stabilizing jacks attached, usually toward
the rear. If yours doesn't you should consider getting some. They just make
stabilizing the rig easier. If you do add them be sure to note the lifting
capacity. Generally the scissors type have the greatest capacity. If your jacks
can lift your RV then they may be able to double as leveling jacks too. Make
sure your RVs frame can handle the jacking without damage. Ask the manufacturer
if you're not sure.
Some
fifth wheels had the crank down type stabilizers already installed, otherwise
you can have the scissors type because they will lift more weight. When leveling
the trailer front to back you can set the rear stabilizer jacks snug then
lower the front landing gear raising the front of the trailer up to level. This
lifts the trailer up slightly off the axles. By doing this I can get the
trailer more stable without having to really crank hard on the stabilizer crank
handle. Because some stabilizers can't bare much weight you have to be especially
careful about how much you lower the front landing gear.
If we will be parked for more than a few days you can also set a couple of the jack stands under the frame behind the back axle for more stability.
You can also use and recommend a king pin stabilizer for fifth wheels RVs. It really does work.
JCwhitney Has RV Equipment.