Seiffert finished tied for 43rd at -3, his best finish in three career PGA tournaments.
"Don't Blink" with angler Mike Hickey earned first place with a 553 pound marlin.
The two day clinic at Mosley was attended by approximately 200 kids aged 10 to 18.
42 boats are entered for the 15th annual tournament.
Boats leave on Friday morning, one day behind the original schedule.