If memory serves, there were some proponents of using a boat-seat swivel of some sort, to skew a dish.
It went for maybe 10 dollars (?) at the local hardware of sporting store.
Whether that would be up to the task of supporting a 6' Prodelin, I have no idea.
I thought about using one, but didn't see a good way to hold the dialed-in skew.
And in truth, it wasn't really necessary for my needs back then.
At least, that's one search word that should be rare in the FTA section:
boat.