D - if you want to do it the easy way . . . a mechanical jack plate (cheapway) or Hydraulic jack plate (more expensive) will do the job especially if your transom is solid. Hydraulic Jack Plates also allow you to maximize your speed (several MPH)
http://www.bobsmachine.com/Products/..._hydraulic.cfm
http://www.land-and-sea.com/marine/het/why_jack.htm
