I’ve had a canopy open in flight – it aint pretty – and that was with a 7A tipup. The canopy flies open and if there is any turbulence it slams closed and opens. It’s not pretty. With the tip over Showplanes canopy if it comes unlatched it Will depart the plane and hopefully it will miss the empennage. But I don’t want to test that so I installed an adjustable microswitch which senses when the forward latching pin is in it’s fully extended position. It’s connected to one of the G3X discrete inputs so when the canopy is open that will be enunciated when the rpms reach a certain level.
I threaded the end of the pushrod and inserted a bolt and ground it down so that it was slightly smaller diameter than the rod and then polished the end till it was glass smooth.