I found this old link I had to a strip built that is like what you propose. It looks like the page is under construction since I last saw it, but some of the pictures are pretty good.

-Tony

: I'm going to be building a couple of singles this winter, and was considering
: putting larger than normal hatches in front so a kid could come along on
: calm water paddles. Maybe using a drop-in, removable seat for them. Don't
: want to build a double or triple as most of the time it's going to be just
: me going out.Has anyone done this before? Any good ideas, tips etc? What
: about the trim of the boat?