Pete, you may yet end up converting it. We have had a few of these pop up now and then (RTR speedboats) and its a bit pot luch as to if they perform well or not.
Sometimes the hulls are really nice and warrant converting. My Hornet was an RTr, but of the slighty more expensive type (I just had the hull off someone, bare of any fittings) ; the standard of finish and construction is mouthwatering..paper thin very even fibreglass..superb gel/paint finish.
But..usually the hulls are very light and can be made to go quite well and for not a lot of money. however, as you have already splashed out £1.50…
Ashley