Laminating new transom
 

Laminating the new transom prepping the stringers. Close up of prepped transom show screw pattern. Screw's will be used from the inside and outside to draw laminate together and squeeze out air.

Fuel tank, transom, and the beat goes on...
 

Fuel tank is good. No leaks, no oxidation. 50 gal capacity, custom 3/16" welded aluminum. The tank was sealed with zinc chromate prior to installation so foam should be ok to use (though I do prefer coal tar epoxy...)

On a separate note, I have received lot's of feedback on raising the transom, both for and against. The main reason I chose to maintain the 20" transom, besides preserving the classic design, is keep the center of gravity lower = better ride. Can anyone provide a persuasive argument for raising the transom to 25"?

Plywood is in.

Dry fitting deck
 

Dry fitting the plywood template for the new deck. Fiberglass tube for clean access to the chase and keeping water out.

Bimini top measurement
 

Was able to get access to measure the Bimini top today. The canvas is Sunbrella. 8 years of Florida summers and it still looks new!

Nice!

So just to confirm, thats 77.5" between the uprights and approx 65-66" for height?
If you get a chance how long is the canvas when its fully open fore and aft?
And thats a four bow right?

If this doesn't bother you, then proceed as you planned. Good luck!

Uncleboo, thanks for sharing your advice and experience. Perhaps there is a difference in how our 18s are rigged and/or transoms configured, but I have not had any of the issues you describe. Fishing blue water with over 1,200 pounds of guys and gear on board the rigging stays dry and my hydraulic steering is above water. This may be due to the jack plate I use. I will get closeup shots of my transom and rigging to better illustrate.

Zachary, that's correct 77.5" between and 66" tall. I will confirm the width measurement today making sure the uprights are not squeezed or spread. Bear in mind the 1978 18sf has wider gunnels than earlier models so you may need an inch or two wider Bimini frame to depending on your configuration. I will also get you the open measurement.

I'm very interested in seeing your pics. I'd like to see one of the stern with the motor all the way down and one from the side. May just give me some ideas. Thanks!