Track mounts are great for allowing movement of the foil mast on the board but having to install and remove the 4 sliding track nuts every session sucks.
Armstrong have solved this problem by putting open ended slots on the foil's track mounts and attaching the screws through elongated washers.It's Time for the other manufacturers to do some R & D (rip off & Duplicate) to put this common sense design on their foils.
BTW It wouldn't be too hard to buy a set of these Armstrong screws & cut any track mount's holes into slots to use them.
I just built a trailer that takes a board with foil mount attached instead.