hair loss for TR7 DHC owners problom solving

do men who own a TR7 DHC a soft top lose there hair kwiker than men who own a TR7 FHC a hard top ?
if you know a man who drives a TR7 DHC are they getting a bit thin on top ?
if not do they wear a hat when driving ?
does driving with the heater on full hot with the roof down couse this with the top of your head cold and your feet and body hot ?