I think they are a great idea ive just bought one 2nd hand £35, its got a big holdall on for the nets plus pockets for locators and stuff, it will probably take 2 double boxes, 50+nets and longnets baskets, spades and rabbits with ease, saves all that lumbering all youre gear about especially if you get big numbers?
it folds up and down in seconds and easily fits in the boot of youre car, just needs some mesh webbing on the sides and bottom to stop stuff falling through.