Starting my first Project.  Hope I can rely on some good coaching from all you and your experiences.  LLoyd IMG_0266 (1).JPG 
Hi DakotaFish:  Nice looking boat!  Here is a great resource I scanned in a while back, it is especially useful in calculating flotation requirements!   http://boatsinthebelfry.weebly.com/archive.html    Also look over what I have here:  http://archive.org/stream/RestorationTipsForCollectibleFiberglassSpeedboats/restoration_tips#page/n0/mode/2up   click the pages to go forward or back.

I'm not one of the experts around here, but it seems to me the boat would be easier to move into the shade to work on if there were wheels on the trailer.  Just a wild guess, but try sanding the topside.  Seriously though, having dragged home 2 of those myself, you should consider some additional bracing under the topside since the boats were not one of the more solidly built brands.  Sure good lookin' though.  Don't go hanging a super big motor unless you increase the size and thickness of the transom.  I like the idea of a solid poor transom, but most of the experts here still recommend marine plywood build-back.  No matter what you hear about rebuilding transoms from the outside.   Don't do it.  always cut away the inside layer of glass.  If I recollect, that's a "cored" boat which means there's a layer of wood between the outer and inner fiberglass.  More often than not, the core is rotten.  You then must cut and grind away all the inside floor glass remove the old core material and replace it with new synthetic core or marine plywood.  This laborious duty is why these great looking boats are often passed over by collectors when they are great boats to own when restored.  If you do re-core the boat, consider going back with epoxy instead of fiberglass resin.  The epoxy is water proof and the resin ain't.  Be sure to lay down a good coat of epoxy on the inside to set the new core material intoin order to avoid trapping moisture in the core which was the original problem.  But then I'm not an expert.