Lake Poinsett

This large, shallow lake of over 5,000 acres,  the widest lake in Brevard County, with a distance of 5 miles (8 km) at its widest point. At the eastern portion of the lake, a channel connects Lake Florence and Barnett Lake. Lake Poinsett and all the other lakes flow northward due to being part of the St. Johns River system. It is where the Saint Johns River runs along county lines north of the lake. It is part of the St. Johns River Water Management District. At the extreme northwest corner of Lake Poinsett is Taylor Creek, a tributary of the St. Johns River.

http://en.wikipedia.org/wiki/Lake_Poinsett

Poinsett Fishing

This is the best bass fishing lake in the St. Johns chain south of Lake George. Fishing along the bulrush and in coves with maidencane and lily pads usually will produce good stringers of bass with an occasional lunker. Live shiners in the winter and topwater lures or crankbaits in the warm months are good bets for landing bass. Worms need to be rigged weedless because hydrilla can be found throughout the lake. This lake also produces good stringers of specks in late fall and winter. They are usually picked up by trolling in open water, especially in the northern half of the lake. Panfish can be taken along the shoreline with crickets and beetle spins in spring and summer. Sunshine bass may be found in deeper water of the river where it enters or leaves the lake.

Location

Lake Poinsett has boating, fishing, Launch Ramp (small fee may apply). This 6 mile wide lake is located off Florida State Route 9 and 520 near Rockledge.  It's accessed easily from S.R. 520 west of the city of Cocoa. 

http://gorp.away.com/gorp/location/fl/fishing/brevard.htm