What is bezzing?

bezzing through dangerous rocks, bezzing?

It sounds onomatopoeic. I've found a very few uses on websites that would seem to suggest it's a UK regional slang variant of "buzzing", as in a sense of "whizzing". Do you have any more context?

Queenstown is also the home of bungee jumping and jetboating, or as it's more accurately known, bezzing a speedboat through ridiculously massive and dangerous rocks.