What kind of board are you using? I use celotex sound board it soaks well also you might consider switching to wood glue. I used to use super glue but found it had too many issues with cracking and lumping not to mention smell. Wood glue is a little slower ill grant that but i no longer will use super glue unless i absolutely have to. Ill put some wood glue in a dish and have a little water on the side ill apply the glue with a wet paint brush. The nice thing about it is ill have time to adjust the part I'm working on make sure its straight all sides square while the glue is setting. Also wood glue if applied with a little damp brush will soak into the grain making the joint stronger
on the Inside of the canopy where i velcro the electronics i will thin the wood glue and paint the walls with it. What this does is seal the grain making it a better surface to attach the sticky velcro.