Make sure to ask those at the top before trying this
Placing bets on the thread is still considered as bumping if the thread stater wont add some rules about the limit of participant or on the limit of the bets that they can post . Its actually fine to start a gambling game on the forum as long as you have already read the forum rules and the rules on the games and round section . Just make sure that you must use an escrow or hire some reputable managers to assist you if necesary as this will give you an edge among other competitors .