You are making good progress! Thanks for sharing. A router with a template works really well with getting slots to an exact size. Either cutting a template to re-use on each frame or hot gluing strips at each slot and using a pattern bit. A template has the advantage of checking fit on the stringer first and using as a guide to get the stringer right. Not sure if you have a router yet but you will need one later on. Getting round overs on frames etc prior to assembly can save lots of time later on too.
Thanks for the comment. That is a really good idea. I have finished sanding all of the bulkhead slots. But I am sure that I will have a future use for this idea. Thank you.
Do not worry about your friends not showing up today because they will be there when it's time to go boating, but not when it's time to fill up with gas