We've just been using a generic tennis ball, but it is getting pretty gross. What is the best retrieving water toy that you've found? Needs to be able to handle gross water (and sand), and we'd like to be able to throw it far (not Chuck-it far, but he has 50' of long line we'd like to max out). Bright color is a plus, so we can see it and won't loose track of it. Durability doesn't really matter, as long as it can handle being carried around in a mouth. This is a toy that will only come out at the beach for him to retrieve. I was considering the version of the Wubba meant for water, but wasn't sure of its texture for cleanliness/durability?