I have a 2006 Hunter 33. Standard maintanace procedure for any fuel tank would be to regularly check the tank sump and drain any accumulated water and/ particulate matter. Unfortunately, the Hunter 33 tank does not have a tank sump or drain. Anyone have any experience with this situation? What is the best way to maintain the tank and get any accumulated water and/or particulate matter removed? I know that there are fuel polishing services but was looking for something that I could do myself which is less expensive.