You can't easily turn a boat head to wind with the main let out.

With our prevailing SW I (and others) regularly have to make downwind landings.
If it is less than about force 3, you simply round up just off the beach and drop in backwards.
If it is blowing hard then you round up a good couple of hundred metres or more off the beach and uptide. You have to sail the boat up into the wind and only dump the mainsheet when fully head to wind. Now you need to QUICKLY get the main down. I found that I needed to slightly alter my halyard hook so that it worked every time and changed the outhaul and downhaul so that they could quick release. I then usually drop the main until the top two battens are still in the mast track and with my now heavily reefed sail, simply sail in as normal and round up just off the beach.

It just needs a bit of thinking through and planning