jw,
Thank you for your inquiry. I am always looking at the latest and greatest  
drink holders that come on the market. West Marine has hired me as a 
consultant.  Since I drink only rum and coke, this means I need a drink holder to hold 
my  insulated styrofoam cups. I have two swivel mount cup holders mounted to 
the  stern rail. For everyone else I use the little doughnut shaped flat drink  
holders over the bottom of the cups that use suction to hold them to the hull. 
I  forget what their name is, but I'm sure someone can help me out. They work 
 extremely well until you get down to the bottom of your drink and there 
isn't  enough weight in the glass to keep the suction. (solution is to drink 
faster so  as to have some ice for weight in the cup). You can stick these little 
suckers  anywhere there is a smooth clean surface and they won't release, even 
when  heeling. Don't give up the heeling to save the drink. However, waste 
knot, want  knot. Spilling good rum is a no no, but giving up a good heel to save 
the rum is  a waste of good wind. Your call.
 
Rummy