Isn't one advantage of the orally inflated ones that when you transfer air to it from your lungs in a single breath you won't have changed your buoyancy?
BTW, if you've ever seen the Youtube videos of how not to deploy a SMB, you've seen how it was for me the first time I tried it. My wife nearly drowned laughing at the spectacle I made of myself. One tip: when you get a finger spool, the first thing you should do is unreel all the line from it and tie the end of the line to the spool.
BTW, if you've ever seen the Youtube videos of how not to deploy a SMB, you've seen how it was for me the first time I tried it. My wife nearly drowned laughing at the spectacle I made of myself. One tip: when you get a finger spool, the first thing you should do is unreel all the line from it and tie the end of the line to the spool.