My idea was I do not want to redo the canopy for a 3 rd time so I figured no lock so if someone wanted to break in, go for it. I left my plane in a FBO hangar a couple days and everything worked out ok. I did wonder if anyone opened the canopy just to look. I have decided to get some unique zip ties, drill a hole and zip it shut. It will not keep a robber out but will keep the curious who may touch something. I may be worrying about something that may never happen but I will give it a try next time and see if I am more relaxed as my plane sits in an FBO hangar or on the line.