More and more I like the idea of binoculars (or drones, then you can inspect the fork right before you drop your line through it). I've had a few canopy anchors that weren't cinched by over a foot, and other TIPs that got my lanyard out quick as mentioned earlier. My favorite was a silver maple I ascended to find my anchor cinched around a 3" dead branch. The fork looked great from the ground.
Then there was the basal anchor that caught another branch I couldn't see, causing a 6' drop on my ascent. It waited till I was just over the roof.
As far as other bad habits, getting lax about making calls before handsaw cuts and letting the chainsaw speak for itself. There really is no reason not to call. Man, Mac, this is tough. Thanks, though.
One question, how far do you guys push your hitch cords before retirement?