Yeah it's a little confusing at first but thumbs up means "let's go up". What you probably want to convey is something like "cool".
No worries, dude ... here's what we do in So Cal. Start with your basic thumbs up sign, then extend your pinkie. Now you're sport'n a
shaka sign.
The sign is of Hawaiian origin, but is quite commonly used today in action sport cultures. Among other things it's used to convey ideas like "alright" or "cool". You can tilt it, rock it, or pump it for emphasis.
Here's how it works:
scenario 1 - You're cruz'n along the reef and your buddy gets your attention and points out some cool hidden critter. After taking a look, you acknowledge by throwing him/her a shaka.
scenario 2 - You and your buddy are cruz'n along together again (cuz that's what good buddies do) and some big critter (like a sea lion or something) suddenly passes right in front of you. You point and turn to your buddy ...he/she is doing the same. You each rock a big shaka at the other.
scenario 3 - This is a slight variation of 2 above (little more advanced lesson). You and you buddy are doing your safety stop and big shark cruises by. At first you turn to each other with shakas flying. Then you notice that the shark looks pissed off and is making closer and bolder passes at you two. You quickly suck in those pinkies and revert back to the thumbs up ... "Let's get the heck out of here, daawg !"
One word of caution. While the shaka seems to have many attributes that make it a good UW communication tool that solves some of your current issues ... there is at least one potential problem with it. If you get the thumb and pinkie too close to your ear/mouth (respectively), it could possibly be misinterpreted as "I need to make phone call". This, in turn, could be promptly followed by a thumbs up question from your buddy. Now you're right back where you started. :shakehead
Good luck. Dive safe !
