Winterized mine saturday and the nuts on the vdrive were a royal pita. I couldn't loosen them so i put a shop vac on one end of the unit to suck out any ridual water then ran plumbing antifreeze thru it. came back to it later after i was done everything as to not let a little bolt get the better of me. I got the rear one loose figured it was lower than the front so the better of the two and having removed both intake and discharge hoses no antifreeze drained out the bolt hole. Don at Aquamarine didn't think there would be much after disconnecting the hoses....he was right...but i had to find out for myself.

Did some research on the dripless shaft seal systems and it appears as they are self draining and actually when operating one saying upto a gallon per minute. so apparently no real need to do any winterizing here....... and nothing was mentioned to me as far as i know by my dealer......