islanduni
Registered
There are good and bad about a spare air. Good, you might have air when you need it most. Bad, it might be leaking. Good, you look cool with all your buddies. Bad, you depend on it too much and you get careless. Good, you can always hit your buddy up for a refill before he jumps in. Bad, you just lost a dive buddy. In conclusion, they didn't teach you how to use a spare air in dive class so just practice "blow and go's" and you should be OK.