My forks are at least 1-3/8" thick.That is seldom an issue for me, and a small piece of plywood against the rack would work in that situation.
I do not keep 1-3/8 plywood on hand, and if I did it would be just another item to get on and off the tractor for.
My forks are Q/A with hydraulic lock.
I never need to leave the seat when attaching/detaching forks.
Convenience is what I prefer.