Why not build something in the 14-15.5' range? It may be a tad big for him right now, but it will take a lot longer to potentially grow out of. I say potentially because most kayaks in that size category will still have enough displacement for an adult, although it would then be considered "low volume".

I also like the Yost SOF idea, but then again I'm partial to SOF in general...

: I'm building a Redfish Spring Run and my 7 yr old son asks me weekly
: "when are you going to build me a kayak?". So, I've decided to
: build him one and am having some difficulty deciding which boat would be
: suitable for a 7 yr old. I'm considering a Redfish Parr and have received
: some positive feedback on it and am also considering a Pygmy Osprey 13.

: Have any of you built a boat for your kids that you think may be a good boat
: for me to consider? I would like it to be usable for a few years befor he
: outgrows it and would it to be a reasonable performing boat so he can
: paddle with me.

: Any thoughts??