Storage, storage, storage - oh and quite useful as a sail in the 60mph gusts we are having at the moment.
We thought long and hard about added windage/buffetting vs having somewhere to put stuff (especially with pram, sleeping stuff, sprog, sprogs stuff, more sprog stuff, oh and some sprog stuff) and I think the upturned boat is a good trade off for having the floor free of bags and stuff.
My opinion - and I'm sticking to it - till I change my mind that is.....
