Ban block booking

I think that block booking should be banned, so it gives everybody else a chance to get a pitch of there choice, you should, only be able to book perhaps, a week or so  before,  because people block book pitches then if the weather, isn't looking good they cancel this should be stopped, im all in favour for having to pay a deposit and if you cancel you lose it this would free up sites, on more popular sites, if you go into  travel agent's you have to pay a deposit as you do on other non cc sites, who's in favour