Whew! You'd be bagging a lot of wet grass! Or were you just going to leave the back open and let it disperse the clippings?
What are you using now? Are you bagging it? Do other LCO's in Vancouver bag grass?
Personally if I were in those conditions I'd get a heck of a good side discharge with an operator controlled discharge chute and a really big backpack blower to clean up afterwards.
From my experience customers don't want to pay enough for me to have to deal with disposing of clippings They're the folks who want to let it get too tall before they have it mowed.