DULUTH — Before the crowd at the Gwinnett Arena heard the total of Jacob Wheeler’s five best bass on Thursday, he knew it was something special after a great day fishing on Lake Lanier. As the fish flopped in the bag on the scale, Wheeler anticipated the announcer standing by his side on stage to call the weight on the first day of the Forrest Wood Cup. Then the 21-year-old angler from Indianapolis let loose with a fist pump, just before the announcer was able to call out his total of 21 pounds, 15 ounces, putting him solidly in first place by almost 5 1/2 pounds over his nearest competitor with three days left to go.