No, boaters are allowed, they just can't have their boat with them. Just like drivers aren't allowed to have their cars with them.

The numbers of boats on some of the more popular beaches is starting to take over and I think there will be more restrictions soon if it carries on, they are in danger of pushing out other beach users. I went to Mudeford, on the seaward side, on bank holiday monday (by ferry - left the boat in Christchurch) and was hard pushed to find a place to swim safely because of the number of boats.

The small beach at Yarmouth has the right idea. Part of the beach is roped off and out in the water for about 100 yards and boats can land on a seperate section of the beach. I personally don't think boats and swimmers should share the same area under any circumstances - there are too many irresponsible people in both groups.