My main concern is stability. If the 13 is stable enough for me to
fish from I'll go with that. ...


For solos canoes, both the Solo 13 and Solo 14 would be considered to
have a high initial stability and relitively high secondary stability.
Both boats have flat bottoms, but will sit for hours on edge with the
rail in the water. I have not noticed any significant stability
difference between the 13 and 14. The major difference is that the 13
is slower and doesn't track as well. In addtion, the 13 can't carry
the same amount of weight. In general the 14 is the more useful in a
variety of circumstances. But for fun technical paddling the 13 is
tough to beat. So if you want to stand in your boat... buy a tandem
because there are very few solos that are very easy to stand in... but
if you're going to kneel or sit when fishing... either should work
fine.

PK