I agree with glacierbaze, I've got a beach cabin on Whidbey Island down here just north of Seattle and have a similar setup where I've got a permanent mooring buoy out in front of my cabin. During the summer, if I got out fishing when it's a low tide, the tide will go out probably a hundred yards or so from the beach. It can also get pretty soupy in some spots to where I don't want to drag our 12' Lund aluminum dinghy out over it, even with the wheels on the back and sink up to my knees. So, I bought a kayak for going out there by myself in, attaching it to the boat, taking the boat off the buoy and then clipping the line of the kayak to the mooring buoy. If I'm picking up people on the low tide, it's all sand and I'll nose up to the beach, pick them up and then take off from there. If not, then I'll just start fishing when I get off the buoy as there's pretty good fishing right in front of our cabin. If the conditions are questionable or if you are going out with 2-3 other people and it's high tide, I'll take our 12' Lund out and do the same thing where I'll just attach it to the cleat on the boat, take the big boat off the buoy and then attach the Lund to the mooring buoy and leave it. We're in fairly protected waters in the Puget Sound as well, but you will get 4-5 waves at times when it's really windy and when freighters go by, but I've left out 12' Lund out on the buoy for days at a time without any problem. I can't really help out with towing a dinghy or storing one on your Grady, but do have over 30 years of going back and forth from the beach in a row boat, kayak or standup paddle board. For going back and forth to shore, I'd get a 10'-12' aluminum dinghy with the wheels on it and something that's light as an outboard/fuel tank just add extra weight imo, and I'd just row back and forth if it's fairly protected with mild winds/currents. Or, depending on how rocky the beach is, you could drop them off on the beach at high or low tide?