I agree Garhauer is very good value and well made. But if you go to Harken's site they have examples of various sheeting arrangements and Compu Spec will tell you what is recommended for any boat in their database (thousands), whether mid or end boom sheeting as well as racing or cruising. They will also tell you loads on sheets at various wind speeds. It can be printed out. Then go to Garhauer and purchase if you wish.