sandpas

My friend has a Yamaha jet boat and she needs to keep her hand on the throttle in order for the boat to move (and keep it on it the whole time). Is this true of the 2008 Utopia jet boats? We are thinking about buying one but have to travel a long distance to see it. We were just wondering if anyone could answer that question. Thanks!
P.S. please tell us if you like your Utopia 205's.