I think GBP is new, I had an account already and used it to b2x last bull.

One thing to be mindful of is that a drop like the one in 2020ish (end of last bull) can completely wreck you.

They have a reasonable LTV but Bitcoin can and will eat your lunch if it wants to. It scares people like my friend. It set me back and humbled me too.

I think timing is important but it's the inverse of "selling high"... you should stick to bear markets and maybe the beginning of a bull run but never in the middle of it.