Thanks for the info on seat location Glen, I was just going to ask Randy if Steve's plans included any info on seat placement for the Freedom Solo.
The other thing that will help is the asymmetrical hull, wider(and heavier) aft of centre, lets you get away with an extra inch or two aft of centre for the yoke placement. I do think the swing down yoke could be good, esp. as you could incorporate the backrest. You could build it so the 'yoke rails' that swing up and down are wider nearer the actual yoke cut-out, so that when it swings down it would be a couple inches higher (towards the shear) of the canoe, thus giving you more clearance for your head.
One thing for any kneelers that might work is to incorporate the 'Power Rocker' seat that Mad River (I think) came up with a few years ago. There was a thread on it over on Solotripping. I have some pics somewhere so maybe I'll post a few. It allows the seat to tilt down to allow for kneeling all with a smooth easy elegant design.
That would be the ultimate seat. A seat with a combo fold down yoke, integrated back rest, and a power rocker type sliding mechanism to easily move back and forth between sitting and kneeling. all weighing very little. Built out of cherry.
Randy, send me the plans when you design it!
Moonman