I use system 3 clear coat. You can use West Systems as well. The key is using a Marine Epoxy. It is meant for severe outdoor use and is water proof.
I apply with a tooth brush and saturate it until is is super saturated then let sit for about 10 minutes. I hang it over the cup so it drips back down into the mixing cup. After waiting I take a wash cloth and grip it around the handle and give a gently pat and squeeze of the handle removing the epoxy. I then coat it again until super saturated and let it drip into the cup once again and wait a few minutes.
Then now take the cloth and go over the handle and squeeze gently removing all the epoxy on the surface. Let it hang again, wait a few minutes and go over the cloth again. Hang it again, wait and do it again until the cord no longer is weeping the epoxy.
Come back in 30 minutes and check it again and go over it again with the cloth. Hang and check again in ten minutes for any areas that are still weeping. It will end up looking like cloth again. Let it hang and dry, check periodically for fuzzies that pop up.
At the end it will look like this.