Hi Archers, shall I call you Chris instead if you can't stand The Archers? (The Americans won't have a clue what we're talking about!)
Those 'Big Shot' catapaults are a serious bit of kit designed for accessing tall trees - you can really do some damage with one if you're not looking out.
Trimming off branches to make the climb easier? It's not really the done thing
Remember the trees aren't there for our amusement, they are living things, and we're just visitors in reality. I wouldn't damage any plant or tree unless harvesting it for food or preventing invasive plants from taking over. The most I've done is to clear away dead branches on the first ascent to make the climb easier and safer.
I found the climber finder very slow to use because it appears to download too much information at once. The lack of entries from the UK may also be because not everyone has ticked the box 'show me on climber finder' in their profile.
Have a good weekend. I'm coming down with a cold so my weekend will be spent indoors
Regards,
Michael