There is a good facebook group called Solar in a Boat. Check it out! 
When you glue you have to do it the right way... Eg panels MUST be well glued. Otherwise very high temps (if air bubbles under the panel) on the deck under the panels can be the result, some even mentioning a fire threat from flex panels.
 I am back to rigid for the time being, better power/area performance.
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Bernd
SN 119 / Cascais, Portugal