Wakeboard tower rack mounting on a pylon??

So I got a new boat and it has a pylon for wakeboarding and I am looking to get all the boards out of the boat. I know in a year or so that I will be adding a tower and don't really want to waste the money for the regular pylon rack. I am wondering if it would be possible to mount two regular tower racks to the pylon so in the future I can just use them on my tower. Airboom makes a rack that looks like two wakeboard racks with one mounting point. Here is the link
http://www.airboomwakeboardtowers.co...18/page18.html

So my idea is why not buy two separate racks( regular wakeboard rack and a wake surf combo) and just mount them right next to each other to help balance the weight? Anyone have any opinions on this idea? Thanks