Peeing off boat
 

Found on Google images.

Some more girlies polluting the ocean..;)

Peeing on the boat
 

when we had our boat our two daughters and I peed over the side all the time.
I taught the girls how to pee like I did.
When I had to pee I would get my TP then with my back to the side of the boat I pulled my jeans/shorts and panties to my knees. I sat on the back of my legs on the side with my rear just far enough over the side so my tw*t would be over the water. I them peed and when finished I wiped and tossed my TP in the water. As I stood up I pulled my panties up then my jeans/shorts.
Be sure to hold onto the boat so you won't fall over the side if the boat rocks.
Guys have it easy. My husband just stood at the side and peed in the water.