I think PJ is dead-on with his comments.

Since I solo a tandem, how I load is different from a true solo in where I place my packs but the desired effect is still the same.

I want to slightly bow heavy 99% of the time unless I'm running with a strong wind at my back. Then I want to be stern heavy about the same degree as bow heavy.
Some solo paddlers because of their chosen canoe don't really have a choice where the big pack will go.

I think that's why many like the sliding seat option.
A little bit of direction with weight can make a lot of difference in how your canoe handles