Funny (and informative) post. I haven't sidemounted off a boat yet and am dreading a bit the logistics of it. I'll be doing some boat charters on Lake Michigan and my working assumption is that the crew/DM will be an interested observer. Having them hand off my tanks while in water sounds nice, but they may drop it or slip my heavily clad gloved fingers which is not a good thing when the bottom is 90+ feet. Using a line will help but that requires the crew's active participation. And those jet fins are a PITA to don with rock boots, esp. in water.