I have a Yakima basket and am going to use it on the trip home. Want to find a cargo bag that fits easily into the LoadWarrior and will protect in rain and snow.
It is very difficult to make a large user friendly bag like that. If I need waterproof I use sea-line dry bags. Otherwise I use NorthFace expedition bags which are water/weather resistant. I use the NortFace bags on my roof rack with good results.