The question of low US entry #'s is an interesting one to think about. I honestly think that most of it has to do with the low publicity of aquascaping. Freshwater also seems to be laboring under a stigma of being lesser than saltwater. In other words, saltwater keepers are generally accorded higher respect. I think those have to be addressed in order to shift the population more towards aquascaping and eventually, competing. This is one of the reasons that 'televising' the live contest over the internet would be a really good idea. That and/or posting vid after the fact on youtube that has been properly SEO'd. Essentially the more presence you bring to the market, the more you show yourself as a big deal, the more others want to join.