After many Whoop crashes and many destroyed canopies I decided to design an internal roll bar to stop the thin canopy from collapsing during crashes. This roll bar was designed for the BetaFPV Beta65 and Beta75 but may work with other canopies. It can be printed on most printers with no support as the bridging is minimal. I've printed it on my i3 Plus as fast as 100mm/s at 0.3 layer height with no issues and it only takes about 5 minutes. It weighs less than 1g.
Added 2nd version to support the BetaFPV Betacube FC that comes with a plastic mount - this mount has a ridge parallel with the mounting holes, so the new version moves the roll bar forward of the ridge but keeps the mounting holes where they are. It's a little bit trickier to install but works well. I believe this version may also be needed for newer version of the Beta65 and Beta75, but check your flight controller/camera mount to make sure.