Supra Sunsport 20V Owner's Manual page 58

Optional Boat Heater
The boat heater is a forced air heater that uses hot engine water
as a heat source. To use the heater, simply turn the heater switch
to the selected fan speed. In order for the heater to work, the
engine must be at operating temperature. One of the features of
the heater are the snorkel vents, which can be pulled out to direct
heat to specific areas.
NOTE: Location varies by model.
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Optional Bimini Top Styles
The bimini top is designed as a sunshade. Please see the
mooring cover section for instructions on cleaning and caring
for your bimini top. When opening and latching the straps to
the eye hooks, twist the strap one to two times to prevent them
from vibrating in the wind.
DO NOT tow the boat above 45 MPH with the bimini top
open or the Z5 canvas on the frame. Damage to the canvas
may occur. This type of damage is not warrantable.
© 2010 Skier's Choice, Inc.