I bought one of those two way pumps at Wal-Mart for my pontoon. It took a while but did the job, however the next time I used the pump it became a one way pump!?! I took it back and got one of the pumps you hook up to a car battery. It works great and is very quick although it is noisy. Somehow a picturesque sunrise on the water is ruined by the high pitch whine of that pump. But at least its quick.

hNt