I gave it a ten, just because...
It's so damned addictive. I've been playing this the past few days on deviantart.com and wouldn't ya know, it shows up here on Newgrounds. Now I can finally give back with a pleasant review and a generous vote ;)
Well, the gameplay is great. Very original as you said. It's actually not the first platforming golf game I've seen, but most certainly the best. I've already got these levels worked out to a fine art. I'm skeptical that stabbi really got 7 under on his second try, as that's my best score out of about 20 plays through. But heh, anything can happen in this game.
There are actually a couple of glitches. That guy who mentioned the floating ball wasn't pulling your leg. I've only seen it happen in one place, but it happened several times. On the last hole, at the bottom right, I've seen it float over top of the gap that you shoot up through. Also, on that 4-par hole that's possible to get an albatross in (^_^) I've managed to get the ball stuck in one of those little mounds on the right end, such that it took a couple of full-force blows to get it out :(
Very cool game though. Amazingly addictive. I wish there were more web games on rockpool.com, because this one was loads of fun.