[bushpilot]

if its just my wife & i - a WORST case is 2:1 (gray to black).
if 2 or 3 guys at a race - its probably better than that.....shorter showers and a lot more
port-a-john (and GRASS) use.

usually (on a long weekend) race (thursday thru sunday) or a 3 day camping trip, i end up FILLING my black tank w/ water just to get a full pressure "empty"....i rarely have ever filled the black tank (2 weeks on my mother-in-laws curb was the closest ive come)....sure we used the facilities in the house but i showered in the coach more often than in her house.

ill also add - that i dont pay to dump. we've been fortunate that along our regular paths, there are plenty of REST AREAS that offer free dump tank use.

our storage space has a dump station & wash bay as well...so if i cant find a free rest area, ill just carry it home, rinse and dump my tanks at our storage bay.