If I could be allowed a degree of thread creep, one of the other factors in this debate which doesn't involve aerodynamics is one of finance. If one doesn't have the time/skills/patience to hammer one together in the garden shed, then a SportCruiser looks like £80K of anybody's money. A good Cherokee 140 can be had for £15-20K, a Warrior for £25-30K and an Archer for £35-40K. The difference would buy a lot of fuel. Horses for courses I suppose.