With dogs comes dog poop, and being experienced in traveling with our dog, I know first hand that this can be a problem. We were lucky: a small dog that trained easily to "go" on a fake grass doormat. As we tossed her tiny pieces overboard, we'd see other boaters rowing their dogs to shore for relief.
Solution??? Now we have the "dog waste compost station" which you can see posted at the entrance to the path. A wire cage, a shovel, and a bucket of sawdust makes up this sysytem which boaters have been terrific at embracing. (There are those stubborn ones who seem to love their baggies.)