The geocache is NOT at the posted location, although that location isn't bad for catching some fish. It is, however, close by.
All you have to do is work your way the maze below. If you go the correct way, the coordinates will reveal themselves in order, north 1st, then west.

Timer Powers Park sits along the St. Lucie Canal and offers picnic pavilions, an equestrian arena where they hold rodeos, a playground, large open fields, a wooded area, plenty of fishing areas, and a boat ramp. It can be a very busy place at times, depending on when you visit, so please be stealthy and replace the cache exactly as you found it. Thanks!