He said " by the Panther Island Pavilion ", didn't say anything about walking away from the beach. You think the paddle boats and kayaks stay right in front of the beach. Don't think so. They scatter both ways so be prepared to walk a long long way.
I kayak fish the Trinity River near there. Exactly how many kayaks and paddle boards do you think are on the water at a given point?
There have been many days when I only saw 2 or 3 other kayaks when fishing for hours. You don't have to walk far at all. You can literally park on Taylor St, and walk along the clear fork bank and fish for days.