I'm on the fence about putting in a defroster vent, I have heat & A/C and there's room on the driver side for a vent, but probably not the passenger side without creating a whole new vent and space is at a super premium...
is there a guideline on how much 'hose' should be used to locate the vent? I know in general you want the hose as taught as possible to reduce airflow disturbances

has anyone done just a driver side defroster? I know it's a roadster, but my buddy the other night used his defroster because the dewpoint got low enough to fog up his inner windshield and it helped tremendously

also, if a soft (or hard) top goes on in the future, it would probably be beneficial as well