Re: Stupid question probably.
I have a 12v wash down pump on board and wash out fish blood and slime even when out fishing (slippery stuff). My bilge pump dumps it overboard for me. Just use lake water no soap or chemicals. When the boat is home I wash again with a little soap and a dab of bleach then rinse well and use the drain plug. It can get smelly if I don't get it all out and clean.