Well since I've not been able to find a goalie bag-sized cover, I spent some time this weekend cannibalising an old tent to make this. Well, three of them - one for me, one for @LinnieBear , and one for my son Adam. We all have Obo travel bags, and hang them from the fence using a snap clip, so there's a slot in the top to let the strap through. Works a treat; I tested mine during Saturday's friendly, dry bag despite the rain. Really happy with it!