I adapted my pallet forks designed for the FEL to fit on the 3pt. Works great as long as the tractor and the pallet are on level surfaces.
I learned the shortcoming was in the lack of TNT (top and tilt). However, my planned use is for firewood pallets, and the cost of a gravel or concrete pad conveniently covers the cost of getting the TNT on the upgraded tractor (if and when that happens).
Even when the pallet and the tractor seem to be on the same 'plane' surface, the need to adjust the top link or the side lift arm seem the norm, rather than the exception, in order to make a clean, quick engagement of the pallet.
Certainly can lift more with the 3pt than the FEL, so a distinct advantage there.