I've seen some frame saws that use a tooth like the Stanley Sharptooth. My concern is that you will be limited by the depth of the saw. Might be ok for 6" stuff, but bottom out on larger. I'd have to see one. I've got to learn how to sharpen hand saws, I've got all the tools around here.

Tim, I remember that docking saw from the workshop. I could tell when you were using it across the tent. It has a very distinct sound. The Stanley saws are nice, but sometimes I think that they may be a little too fine for end cutting an 8"x12" timber.