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Power Caster = NO !
Had one - an accidental good deal. Owner used it to move his 30' TT
on a flat concrete pad. It was the top-of-the line, dual wheel model.
Tried it with the 20' TT I had then.
Flat, level *paved* surface = great.
Anything else - worthless.
Sold it to my neighbor who uses it to move his utility trlr with ATVs
on board from his rear storage to his "hitch-up" area.
Entire area is flat, concrete. For his use - works great.
Yes - they do make a 5th wheel adapter - and there is at least one other mfgr.
*If* your "movement", maneuvering area - is paved, level, flat = may do what you want.
Otherwise you need a *large wheel* fork lift.
Level, flat, paved - small wheel fork lift would work OK.
When (if) looking for a used fork lift - keep in mind most affordable ones have probably seen *hard* use. They've being sold or traded-in for a good reason...;)
BTW - the idea about adding a ball under the 5th is rediculous..:R
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