I routinely do what BC does, paddle the Moose chain the day before and camp near PP for the night.  It takes 3-4 hours to paddle there from the canoe access on Moose.  I also find it is a good way to double check you have everything you need and helps to re-arrange your gear a bit by setting up camp;  when you pack up again it seems the gear is better organized and somewhat less bulky with fine tuning.
This perhaps works well for me because the last hour or two when getting ready to leave for camping at home I am still not entirely "ready" and start to just throw extra stuff I think I want into a pack "in case".   ;D