The ATV tire has a different set of issues. Bead seating gimmicks are intended to assist in seating tubeless tires which already fit their existing rims but need a solid "hit" of air to ease seating the bead. Non-issue for us. We have an inner tube for that.
The problem with ATV and automotive tires is that the bead area is slightly smaller in diameter than an equivalent sized motorcycle tire.
They have to be allowed to stretch naturally. Forcing them in that fashion will only rip them to pieces.
Time and patience.