Hi Cliff,
If you want more information on the Seda Amigo, I built a site at
http://www.canoecolorado.com/kayaking/seda/amigo
It works, but it is a compromise boat. It is really a better choice
for a parent who wants a boat they can use with or without a child.
For two adults, it is too small. Likewise any tandem which is large
enough for two adults will probably be too large to solo.
Eric