I'm now on my 2nd Slipper. The first one took me all over, most memorably to James Bay via the Missinaibi River. It performed extraordinarily well. With a few dramatic exceptions, the Missinaibi is fast and populated by relatively interesting but not overly difficult rapids. As the trip progressed I developed a technique whereby I approached the lip of set of rapids, leaned the canoe over and spun it into an upstream ferry. When I reached the chute I wanted to use I spun it again and dropped down through the waves. Repeat as needed.
The Slipper was designed at a time when designers were designing rocker out of hulls. That helps with tracking and maximizes the waterline length for decent speed. The other half of the equation lies in the shallow V hull shape. That shape leave a nice flat plane on each side of the keel line. When you tip the boat to do that top-of-the-rapid spin you lean out on that plane and feel the canoe firm up nicely. Very confidence inspiring.
I weigh quite a bit more than Cliff Jacobson. With me and 10 days worth of gear the canoe was loaded beyond its design limits. It continued to handle fine but was prone to taking on water in big frothy waves. Still, even swamped as I once was, I was able to paddle through the rapid and stay upright all the way. Those who use a little more sense than I should have no problems.
Yes, this is truly an oldie but a goodie.