Is anyone out there using CSS and/or USRPT as the training basis for open water and/or triathlon?

Having drifted away (pardon the pun) from the pool and into the open water, I am using these metrics to establish a platform for my 1.5K, 5K, 10K, and marathon swim events (26.4K Sri Chimnoy on Lake Zurich in August).

I'm currently training in a 25-yard pool until the ice thaws and the water warms up enough to get into my local swimming hole.

I'd love to start a dialogue with anyone out there who's interested.