Brave guys for racing the zenoah powered boats,well done for having a go.Looking at your two boats id say yours is more stable in the turns for sure but running a tad wet,Joes boat seems to be running more on the plane but much less stable maybe becuase of the lack of chine rails?.Not been able to see the running surface of his boat close up its hard to say but its possible he has some hook in there which could cause the squirelly movement especially in the turns.Well done on your first days racing, now you will have to build one with a zenoah
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Mart