pump it out.....takes me 30 minutes for 2 Ho's with one of these although I have the pump on a 5 gallon bucket.

http://www.jabsco.com/files/17850_oil_changer.pdf

suck it out the drain hose with a drill or vac. pump. It is easy to addapt a fitting to hook up to the drain hose.

So what if it takes 30 min. to drain?? Do something else while you wait. I think the drain tube works fine. Just do it when you know you are not in a hurry.