Hey man, I had the same issue at one spot where I live.
- very easy method I do just simply ride on the board without the boots on do a few tacks upwind then after (this is the hardest part) put your feet in the boots. If you're thinking on getting boots get a velcro pair easy in and out and waaay easier to put your feet in when you cant stand on the board in shallow water. I have laced boots so for me doing this method sometimes they are hard to get in especially when you have new boots and they haven quite broken in yet
Once you get use to riding with boots you will find yourself starting from the beach (if its not a horrible beach) even if the wind is directly onshore starting from the beach isnt hard at all.