1.  Mast Circumference -  This is the circumference where the top of the Waterboot will wrap around your mast.

2.  Deck Flange/Collar Circumference - This is the circumference of the deck collar where the bottom of the Waterboot will wrap around.

3. Overall Vertical Height -  This is the overall vertical height from the deck to where you would like the Waterboot to be designed.  Keep in mind any restrictions like any low mounted mast hardware.

You might want to duplicate the height of an existing "mast boot".  If you have no restrictions, pick a height that will be both effective and attractive for your size boat.

A Guide to Measuring your Boat's 3 Dimensions

the ultimate mast/deck seal

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