In order to get the sump mentioned below I will have to raise the floor of the full keel (except for the sump bit) by approx. 3 inches. I was not exactly sure what to use for this so I e-mailed the folks at Gougeon Bros., the West System people. Jim Derck e-mailed me back with a solution he had used before, which was;
"I made up a sample of 105 Resin, 209 Extra Slow Hardener and added it to play ground sand at a ratio of two parts sand to one part epoxy. I poured this mix to depth of three inches and monitored it with a digital thermometer. After an hour it was no warmer than 130 degrees F which is no problem for the laminate or the curing epoxy. "
Isn't the internet grand! Thanks Jim.
My new motto is going to be "I don't know much, but I can e-mail someone who does."