I disagree C.F.I. other aircraft tails do not flutter as bad as the tomahawk or for that matter any 'T' tail aircraft with a low wing, as the tailplane is in the dirty air from the mainplane at the high angle of attack. In your 152/172 etc... the tailplane is below the dirty air and therefore does not flutter so much. I am sure looking foward whilst stalling is a good idea though, and looking at the tail should be done on the ground.