You might want to mount it on a trailer so it's easy to move. Use the tongue jack on the trailer and a couple heavy tubes with jacks as a three point stabilizer.
Here's some pics for ideas.
Our launcher is an old boat trailer and uses a structure on the trailer that is about 4 ft. off the ground and the tower is hinged about 3 1/2 ft. from it's bottom so when it tilts up, it will be about 6" off the ground. You can use an ATV winch with cables and pullies to lift it. Since ours tilts over the pivot point, we use a garage door spring on a safety wire that is stretched when the tower is up, and it pulls it back down when the winch is unwound.
This one is about 30 years old and has been refurbish and the battery with solar charger and winch has been added.
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This has a Unistrut attached to the radio mast, but we have a 1515 rail that fits in the Unistrut also.
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The red box with solar panel on top houses a deep cycle battery and is charged by the panel. It's been in use for 6 years now with no issues.
From the red box to the tower, you can see the garage door spring stretched out to provide tension to pull the tower back down.
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Better view of the outriggers.
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A trailer launcher at MDRA with hydraulic lift and lower.
Lots of ways to do this. The trailer is nice because it's easily movable and quick to set up. It's also very heavy and stable.