I was thinking about Reg's big trees, and thinking I'd like to try climbing one. If I did something like that, I'd want to have a line set so I could rappel down if I got too weirded out. How to set the line? Probably out of bigshot range, no? Got me thinking you could maybe fly a line up with a drone. Maybe too much drag for a reasonable machine to carry? Just musing... I'm sure I'll never climb a big tree, and I don't need a drone for the stuff I do, but ya think it would work?
Having said that, I've gone up on just spurs and flipline a bunch, sometimes it's the easiest way to get up there, and is perfectly safe if you have your hands on the line by the trunk to squeeze if you gaff out.