The Watermelon thump auction has been going on for years, melons are brought in on the Thursday of the Thump if qualifications have been met. They are then judged and weighed in on the same day starting around 5:30 pm at the Thump Pavilion.
The top 15 melons or qualifying melons are then displayed in the window of the Luling Oil Museum, until the day of the Auction which is held the Saturday of the Thump at 3:00 pm at the Thump Pavilion. Then the Watermelons are auctioned off and sold to the top bidder(s).
A portion of the proceeds go to a scholarship fund that is awarded to a Luling High School Senior.