We use rigid waste pipe and connectors from B&Q, they are held in place by velcro straps around the pipe and the other end of the velcro is connected to short piece of awning skirt beading, fed into the skirt channel on the off side The weight of the pipes keeps the velcro tight and you adjust the fall by the length of velcro, we made ours but I think you can buy a kit from e bay.