No, you are almost right!
Typically the fibreglass tape goes on both sides, and the gaps are filled with bog before hand. Nothing could be simpler. The ply meets perfectly on the inside, and the little vee joints get filled on the outside before glassing.
Using the BoatCote epoxy system, the filler is almost timber colour and barely visible.
In the "don't try this at home folks" mode, I decided to attempt a perfect-on-the-outside joint, and will get a heap of epoxy filleting practice on the inside. Of course that's why Michael in particular is laughing, I've turned a simple process into a not so simple one!
Of course time will show that I could have achieved the same result in half the time, but then I'd have to go paddling!
Michael does provide a comprehensively illustrated set of instructions with the plans , and I've taken to reading them retrospectively, (after I've completed each stage!)
http://www.storerboatplans.com
Cheers,
P
:D :D