Posted for patrick.hayoz@bluemail.ch:

 Hello Daniel,
 
 The same thing, unlatched canopy, happend to me during the testflights
 with my flight instructor two years ago.
 
 As indicated on the LML earlier, an unlateched canopy opens about 4"
 at the aft side - and stays in this position.
 
 Well, if this happens (a checklist is something important...), fly the
 airplane, stabilize TO,  latch the canopy. Being two persons on board it's
 easier to latch it.
 
 That's how we done it with my FI.
 
 Glad to hear that you're on 95% with your project. Good luck.
 
 Patrick Hayoz, L320, HB-YHQ, SWITZERLAND