I have just bought some vertical blinds for my french doors but even when they are fully retracted they flap about and the bottom chains get tangled when the doors are open. I dont particularly want to fix a hook to the wall as the company suggested as i can imagine my 2 year old impaling himself on it. the wall thay the hook would fix to is not full height as the window is square so cant fix it high up. cant believe these blind companys have no solution available to purchase. Sorry this is such an anal thing to ask but is really bugging me! Some one could make a fortune if they designed a solution! Any ideas gratefully received