Leaderboard

I recently bought the Stonefly plans and the assembly manual refers to the strongback brackets being part of the plans, however my plans just had frames only. I have my strongback built just need to make these brackets so I can start assembling. Does anyone have the specs for the brackets? I found some nice 16' clear cypress I am using for stringers and gunwales and have them all ripped, Also local place had the Russian Baltic Birch so I grabbed a couple sheets. This is my first wood working project and I am a newbie with boats as well so should be an interesting and fun project. Pics for build