Use the jacks that are attached to your trailer. Put a block of wood under them. If you want more stability, you can always pick up some of
these. These are time-tested, been around for at least 60 years (my dad used them on his camper in 1963) before they started attaching jacks to trailers. Here again, put a board under them. It will look a lot better and when the time comes to move, it will be a lot easier to tear down. (And ... with these ... you CAN lift the camper, unlike Stabilizer jacks attached to your trailer that are not designed to lift.
Be careful if lifting. Make sure you lift equally at all points, otherwise, it is easily possible to bend your frame if you lift one corner only. But these jacks can be used for lifting, provided you are within their weight range. (Good luck though, attempting to "lift" and you won't be able to get the THAT much pressure on that little handle to actually lift.).... Get the camper level first, then use these to snug it up so it won't wiggle around.
