Not just for Sea Kayaks Anymore!
I've received numerous inquiries for plans for Skin on Frame (SOF) boats. The software I use can generate suitable plans for your Skin on Frame boats. You will however need to determine the appropriate scantlings. Several very good resources are available to guide you in this.

Don't hesitate to call and ask for help or recommendations.

Hooper Bay Type - The Style Kayaks Made by my Ancestors