I can't be the only one that has tried to change oil without a pump can I?
I figured I could syphon most of the oil, then get a foil pan under the oil pan and drain out the last quart or so. Ran tubing into the dipstick tube, through the drain plug out of the back of the boat and into a gallon jug on the ground. Started the syphon. Mmmmm, motor oil! Seemed to be going well. An hour later, had maybe a quart and a half drained. Why did I bother warming the oil up??? Close to 3hrs later, it looked like 3+quarts had syphoned out so onto part B of my plan. The bilge area isn't exactly flat so I skillfully positioned the bilge hose under one side of the foil pan to get it pretty level and unscrewed the oil drain plug. Looked good until it got a little weight in it and tipped...coincidentally as I was trying to pull it out and dumped oil onto the floor. I threw some paper towels into the drain plug hole to stop it from soaking my lawn and went into the house to get some cat litter. Well, the only cat litter we had was in the litter box (damn cat, why does it crap so much!) so I sifted what I could and went back out. Threw the litter down, used another roll of paper towels to clean up the incidental spills (some associated with the oil filter) and cleaned up the litter the next day. So, along with the other stuff I'd like to buy for the boat, an oil pump is at the top of the list
Just an fyi, that scented cat litter did make the bilge area smell nice for a while...but my wife thought I had another woman on the boat with me 
I figured I could syphon most of the oil, then get a foil pan under the oil pan and drain out the last quart or so. Ran tubing into the dipstick tube, through the drain plug out of the back of the boat and into a gallon jug on the ground. Started the syphon. Mmmmm, motor oil! Seemed to be going well. An hour later, had maybe a quart and a half drained. Why did I bother warming the oil up??? Close to 3hrs later, it looked like 3+quarts had syphoned out so onto part B of my plan. The bilge area isn't exactly flat so I skillfully positioned the bilge hose under one side of the foil pan to get it pretty level and unscrewed the oil drain plug. Looked good until it got a little weight in it and tipped...coincidentally as I was trying to pull it out and dumped oil onto the floor. I threw some paper towels into the drain plug hole to stop it from soaking my lawn and went into the house to get some cat litter. Well, the only cat litter we had was in the litter box (damn cat, why does it crap so much!) so I sifted what I could and went back out. Threw the litter down, used another roll of paper towels to clean up the incidental spills (some associated with the oil filter) and cleaned up the litter the next day. So, along with the other stuff I'd like to buy for the boat, an oil pump is at the top of the list