• Take I35 North towards Denton
  
• Take Exit #458, it's the second exit after you cross the Lake Lewisville Bridge
  
• (It says Hundley Drive)
  
• Go East (Right) on Hundley Drive to gates at the marina.

From Denton:

• Take I35 South towards Dallas
  
• Take Exit #457, it says Swisher Road.
  
• Stay on the service road through traffic lighhts
  
• Cross over the highway at the overpass
  
• Turn left at the traffic light onto Hundley Drive.
  
• Continue East on Hundley Drive to the gates of the marina