Next step scarfing side panels

I've been dragging my feet not glueing the cleats & the floors onto the bulkheads so far. but yesterday my budget expanded a little so now I can think ahead & to buying a second sheet of marine ply for the hull side. When I loft, cut out then scarf the 2 side half-pieces per sheet of ply, I'll be ready do "dry fit" the hull into 3D. 

I've taken notes on scarfing from various blogs & read the Builders Guide but I won't know what works until I get going on it. My previous build just had side panels butted up together with a backing plate, which in hindsight was easy to accomplish but very amateurish. A good scarf should be strong & straight, just what you need to have under you when pounding away at sea on a dark night. 

IN HINDSIGHT I may have been a little ambitious claiming that scarfing the Sides was my "next step".