If you want you can print off a template on our website that you can tape or glue to a piece of cardboard and check the fit with a one dimentional pattern. This will show where the shank ends when it is pulled into the roller and it will show where the tip will stop. It will also show how high the roll bar is. The only problem with the template is if you have a bow sprit that comes up thru the roll bar may fit around it in real life but not with the template.