Thanks for that fellas...silicon it is then. So then I guess any suitably sized screw top food container with the bottom cut out will do ?
As you can see from the attached pictures the foredeck framing & transom is now in place. (the transom is a tight fit, the light parts in the photo are not gaps !
Eagle eyed will notice that I've opted for a simple foredeck, and havent followed the plan exactly. The aspect of the ipad camera distorts her true lines somewhat (yes, "it" has metomorphised into a "she" as all good ships must) ...