When cruising for multiple days, we use an actual float plan.
When day sailing, we don't use anything. Probably a mistake.
When cruising to a near by port for the night and back, we just tell a family member or friend (usually my Dad).
I want to get a SPOT, but I would still do a formal float plan for multiple day cruising.
“Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover.” -Mark Twain