Booking overload

I was wondering if other members were also frustrated trying to book either 1week or 2 week stays on site. Only to find that many weekends are fully booked thus preventing longer stays from being booked. Maybe to give a fairer opportunity to all, a change to the system, where the Max bookings against any member could be, say 5 bookings and no more could be made until the first had been either used or cancelled.