Patience Grasshopper
I think this is one little project that you could safely put off until you ARE near a suitable body of water.The holes you will have to drill are above the waterline, so it doesn't have to be installed "out of the water". If it were me, I'd wait until I go to the water, take a drill and some expoxy with me, align it, drill oversize holes, fill with epoxy, and go sailing. The next day, I'd install it.