Ryde has rather small wheels,12cm diameter with a blade width of 5 cm. I have used a modified set of wheels from Float a Boat in Australia, modified in that I have extended the blades. Still not satisfied with them however and I am in the process of building my own. Speed leaves a little to be desired with such small wheels. I have another similar sized paddle stranger the Cardiff queen which has Graupner wheels and she's quite a goer!