Does anyone know what the Luff, Foot & Leach dimensions are when choosing a 150 Genoa for an H22? Although I know the I & J dimensions most sail makers ask for the Luff, Foot & leach as is the case for used sails, which I'm also considering. Additionally, I plan to use a roller furling. Are there any special sail specifications I need to consider? Lastly, I will admit to my limited knowledge of sailing terms, as I'm still to get this boat in the water as a first time sailor. I've seen sails described as having Hanks, Snaps, Wire & Foils. What are they and which would be preferred with a Roller Furling? Thanks for your advise, Pete