RE: How can I report this guy on RC Universe?
You have given the person more than enough time to either ship you the boat or refund your money. I don't know if he is an active member in here as a lot of Marketplace sellers are only in here to sell.
Not only is it a buyer beware world out there but a seller beware also. I've found a few items in our Marketplace and reported those also where someone offers to buy mainly high-dollar items and offer to arrange for pick-up and shipping and the worn out "I'll send you a check for $X,XXX.xx and send me back the rest but keep a few extra dollars for your trouble" scams. These aren't just from foreign countries either as I reported one scammer that was from Georgia.