Russ- Thanks for the letter! My Merit has sail #4, hull 221. I believe it was the first of two boats modified. Doug (maybe I have his name wrong and it is Rob) was a high school shop teacher who figured out the weight problem and designed the bulb for the two boats. I think the letter is probably right about the weight being closer to 125 lb, but the next time it is out I'll measure the bulb dimensions and re-estimate weight of the bulb. The owner prior to me (Deirdre) received a PHRF of 222, better than Rob's 206 right? Maybe Rob had different sails....