If you’re driving on the beach, air down to about 15-17 psi. It will give you great flotation and as long as you aren’t doing any hard core wheeling or any high speed driving you won’t have a problem with popping the tire off the bead. Remember to air back up as soon as you can, but drive extra slow and extra careful till you do.
When you air down it will only affect the bottom of the tire, it won’t cause any extra clearance issues. So if you are already running 35’s it won’t be a problem..