Works great. The pump is up nice & high where you can get to it. Next the hose with a strainer on the very end & and inline strainer as seen in the photo gets pushed down into the very bottom end of the keel. It pumps a little slow but it works great for getting every drop out of the keel, plus it acts like a vacuum picking small debris that comes to rest where you never see. The adays of ramming a square rule into the bottom of the keel are over!
This pump is only for the keel. I have two rule pumps under the motor with easy access should I take on water.
I have a 2.5' deep keel and use a diaphram jabsco pump. Like captain Larry's set up, it has the pump where it is easy to service, and it is self priming. I use a hose with a flat strainer on the end that sucks every drop. It is triggered by a basic float switch (as well as a manual cockpit switch) mounted on a long piece of metal. The that makes it easy to service as well. This set up has lasted 10+ years!