I know it goes against the common practice, but I have the 8.5 x 6 and a 10 x 10 Flexbow and neither one has been hosed down. I always put a tarp over my tents so downpours have never been a problem. The few times I've been out with wind blown rain, the sides still didn't leak.
But I will say that not having a yard may present a problem if the tent gets wet while on a trip and it doesn't have a chance to dry. You definitely need a place to dry a canvas tent before storing it.