I think that was the other company at the top of the river. I definitely recommend using the Kayak Shack ... Paddle up as far as you can and have the river take you back.
Cam K, there used to be shuttle services that took you up to Weeki Wachee State Park and one would float down to Rogers Park, but they don't do that anymore. My recommendation is the same as David's, rent from the Kayak Shack and go up to Hospital Hole then float back down. You can put in at Weeki Wachee State Park still, but you have to get out 2 miles down river, way before you will see the Manatees this time of year. Hope this helps.
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