I do a lot of armchair engineering as I plan out my trailer build and I've thought about a lifting platform like yours and how to raise it mechanically. Besides the options you've mentioned I've thought about using pneumatic actuators. We all have compressors on board, they are waterproof by design, they can go up as fast as you regulate them, and can gently float down. The only thing I'm not sure about is maintenance of the seals.
Btw, I really like your build. Your Jeep and trailer are one of my favorite builds.
Sent from my Pixel 3a using Tapatalk
Btw, I really like your build. Your Jeep and trailer are one of my favorite builds.
Sent from my Pixel 3a using Tapatalk