I have never owned a pwc before and was just wondering how good these Yamaha's are. They seem to run pretty darn good with no leaks or anything. Im looking for a cover for one of them that screws in the back where the fire extinguisher is. I have looked on Ebay and a few other places and cant seem to find any. Is there a good site that I can go on to buy this part? Also are there any performance parts for this 500? Thanks.