| The concept with the Wave backrest installation is this:
 - The crossbar end caps are removed.
 - The backrest tubes insert into the crossbars to a plastic stop.
 - A hole is drilled through the hull deck through the crossbar sleeve, crossbar and into the backrest tube.
 - The backrest is removed and the holes in the backrest tube are enlarged slightly.
 - Re-insert the backrest.
 - Depending on needs, either a flat head screw or quick release pin is inserted into the hole (diameter of the hole is different). The screw is flush with the deck and requires a driver to install and remove.
 
 This is a tight fit as the fastener passes through the hull and crossbar but a loose fit in the backrest tube to allow some flexibility there without shearing the pin / screw.
 
 So the pins / screws are simply there to hold the backrest into the crossbar. As you lean on the backrest the tube in the crossbar presses up against the crossbar. Plenty secure.
 _________________
 Matt Miller
 Former - Director of Parts and Accessory Sales
 Warranty and Technical Support
 Hobie Cat USA
 (Retired 11/7/2022)
 
 
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