Time to be cool like FONZY
Cool is the rule but, some times, bad is bad...
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Here's the tri-fold mount. Basically it installs into a short section of body tube that has been cut longitudinally to act as an internal sleeve.
Insert sleeve (no glue) into rocket body tube, just using body tube as a rounding fixture to hold sleeve,
Glue the tri-fold mount / kevlar shock cord,
Form fit the mount into the sleeve and let dry,
Add glue inside the body tube near the engine thrust ring,
Glue the sleeve / tri-fold mount into the body tube.
A swivel attaches to the kevlar for attachment to your recovery device of choice.
Also revised the location of the launch lug, and added another on the opposite side (Item #8 on drawings below). You call them launch lugs, I call them 20 mm cannons.