I managed to miss the updates, but here they are: Yostwerks Kayak Building Manuals.
Tom now has a few more designs and quite a bit of detail on building an inflatable kayak.  The new Expedition looks pretty cool and a bit more stable.  I’ll have to hunt around and see if anyone has built one yet.

We made it to Canyon Lake in one piece and launched about noon. The weather was nice, partly cloudy and mild temperatures. The water is a beautiful blue and reasonably clear.
Hannah really enjoyed the Sea Pup and managed to dump it a few times. She doesn’t have a spray skirt yet so [...]

I finished up the skin today. The pucker in the middle of the cockpit will get taken care of when I glue up the coaming riser. I’m going to make a free standing coaming like Tom does here but using HDPE tubing instead of aluminum. I’ll post more tomorrow on how well [...]

I laced up the hull yesterday and pulled it tight before gluing the bow and stern. The process is pretty easy and while the lacing isn’t necessary I think it gives me time to work most of the wrinkles out before stapling. The yellow skin lets a lot more light through than the [...]

I finished up the frame and seat yesterday and set it on the scale. So far it’s sitting right at 29 lbs. My goal is to keep it under 40 total. I’m not sure how much the skin will weigh yet but I’ve got a lightweight coaming planned that should help.

I had a test sit in the cockpit this afternoon. It’ll fit nicely. Frame 3 will work perfectly as a foot rest and I have just enough room in frame 4 for my calves to slip through. The 2′ 8″ cockpit is definitely not too large. I’ll just be able to [...]

I got a great start on my kayak today. Hannah’s still needs a little work but I figured I could do it while the glue is drying on mine.
I wanted something to handle my current weight and maybe a little gear. After talking with a lot of people and looking at all the [...]

I finished skinning the aft deck and around the coaming today. I’ll try to get the fore deck finished in the morning before it gets too hot.
The coaming finish isn’t a pretty as I wanted but it’ll do for now. Maybe I’ll replace it with some yellow HDPE when I get the time.
I [...]

I followed the directions in Building the Greenland Kayak for building the float bags but glued the vinyl instead of getting heat sealing fabric.

The process is pretty easy. Measure the void to be filled with the float bag. You will need the circumference of the hull on both ends and the length of [...]

It was 105F in the shed when I got home so I didn’t get too much done.
I glued some extra fabric to the bow and stern and pulled out some more of the wrinkles. Then stapled the skin to the gunwales and cut the excess loose.

I started working on the float bags but it [...]