I then prepared the tail section of the board with a tail patch. I prefer 6oz or 7-1/2 oz glass for this stage, because your bottom lamination is the most important part of supporting a Fin System from failing.
Now place your boxes for a visual and make your markings on the Hotcoat. This board the tailing edge of the Keel Fins were 7-1/4" from the tail, which put the back of the ProBox 8" from the tail. These measurements put the same Keel Fin template with a ProBox base back to Jeff's orginal placements, 1-1/2" off the rail with 2-3/8" toe to flat inside of the front of the box.
Once I find where my front set of ProBoxes are placed, I will set my toe. In this case the toe of the front boxes will be dictated by Jeff's original toe set by his keels from the rear boxes. To find the toe of the front set of boxes, mark in from the rail to the flat of the inside of the box at it's rear. In this case 1-1/2" off the rail to the flat and 3/4" forward of the rear boxes. Then toe in the front box until your flat side is running parallel to the flat side of the rear set of boxes.
After all your markings are done, lay down heat treated tape. I use 1-1/2" tape. This will act as a guide in sanding and creates a good bond with our install jigs with the spray glue. DO NOT over lap the tape!! This tape build up will throw your box install off in depth. Lay the tape side to side.
Cut your glass with a template for ease of cutting multiple layers of glass at a time.
Center your glass over the hole and push 2 layers in like the pic below. Then press the glass outward inside and you are ready to pour.Now do your install of ProBoxes per our instructions on our website http://www.proboxfinsystems.com/
When your install is done and jigs are pulled then you can deflash your boxes with this deflashing jig by Greenlight at info@Greenlightsurfsupply.com
Now enjoy your new Quad Keel combo with no compromising (-:
Top pic is this Bushman with Glas-ons. Bottom Pic is after with ProBoxes in same placement as Jeff started with Glas-ons.
Now from Twin to Quad mode.
Here's the happy owner of this Bushman Board.