I didn't use the waterbed type fittings. I used some sch.40 pvc hose barb fittings (pictures attached). The setup works great and is extremely secure. Once installed, I used a pipe clamp to secure it and duct tape to guard against the sharp edges of the pipe clamp from rubbing on the bag (not shown in pictures).
As for rear sacs, check out the Fly High stuff.
(Message edited by P-hat in Cincy on October 13, 2006)