Looking For A HappiJac Bed Lift (Or Similar)

My 24 x 8.5 x 7.5 Look Vision cargo trailer is ordered and should start being built in a month or 2, with an ETA to my dealer of late Dec/early Jan. I'm SUPER excited!
The one area I'm having a hell of a time getting information about is sourcing/installing a HappiJac bed lift or something very similar. It seems like a totally ideal solution to having beds in there without having to resort to Murphy beds (taking up valuable wall storage space). I'm specifically looking for this type of solution - as a 1-armed person, setting up an etrack bed when I go to the racetrack/river isn't an option I'm considering. The bed lift would maximize space when not in use, allow the bikes to be stored inside when in use, and act as a convenient (low) bed when storage isn't needed.
The one area I'm having a hell of a time getting information about is sourcing/installing a HappiJac bed lift or something very similar. It seems like a totally ideal solution to having beds in there without having to resort to Murphy beds (taking up valuable wall storage space). I'm specifically looking for this type of solution - as a 1-armed person, setting up an etrack bed when I go to the racetrack/river isn't an option I'm considering. The bed lift would maximize space when not in use, allow the bikes to be stored inside when in use, and act as a convenient (low) bed when storage isn't needed.