Why don’t you try a couple of the free poker games on the landing page? If your audience is not familiar with online poker, get them comfortable playing. Put up “are you ready to play for real” teasers to get them to register and play live for free. Getting them to download the software, register and play for free is the hook for getting them to deposit.
It also might help to talk to someone from that age group that is not familiar with online gaming to help you write copy that will both entice play and alay any fears about online gambling. Kind of see what you are up against with that age group market.
You just have to be careful with the young ones. We have seen what happens when a 18 year old wins and can’t legally collect.
Good Luck.