Stinger drives

[RIPFENCE]

HI ALL,

WHICH STINGER DRIVE WOULD BE BETTER FOR A DF 39/35 COPY? THE TWO CHOICES I HAVE ARE THE 85MM LONG OR THE 105 MM LONG...3.5 AND 4.5 INCHES...IS THERE ANY RULE OF THUMB FOR LENGTH OF HULL AND LENGTH OF STINGER..HAPPY TURKEY DAY

[CornelP]

It should normally be 10-13% of hull length. Most of my boats are in that area and they're ok.