On Feb 6, 6:59*am, wrote:
I'm not sure I would want to "hammer" against my cockpit structure
with a rubber mallet or anything else. Can you say cracking gelcoat?

If it was my glider, I would carefully fit the fabric and apply
contact cement to Velcro strips around the edges. More strips on the
cockpit surface and the fabric can be removed for cleaning.

Decent idea. But in the heat, the velcro bond is stronger than the
contact cement and you'll just end up pulling all the velcro up. Use
plumbers goop.