Hello Have been looking into the Tornado T7 47" mono, produced by Prestwich Model Boats in the UK.: http://www.prestwich.ndirect.co.uk/fsrvTORNADOT7.htm I'm curious if these type of stepped hull design are NAMBA legal? This style of mono hull is very popular in Europe. Phil Fields races a Tornado 47 (which is his boat pictured). The build quality of these hulls are very good- vacuumed epoxy-glass.