www.iFourWinns.com

on my trailer, its always down, or as low as i can get it.
also, I always loosen the tie down straps and winch to relieve and pressure that may (or may not) exist on the hull.

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+1
Down when docked. If it is up and you start engine you may not suck in enough water and could "blow"
your impeller (wonder how I know that?). However for the winter I store with it up and never had a problem. Besides I pull the batteries for winter and my storage situation is a real pain to get anything on or off the boat much less install or remove batteries. So, I pull them before traveling to storage. So I have to leave the outdrive up otherwise I make a nice groove in 4 miles of asphalt traveling to storage.

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Optimus Prime
Now: 2007 Horizon 260, (2007/08 brochure boat)
Previous: 1995 Sea Ray Signature Select 220
Tow: '07 Avalanche LTZ
Seattle and Chelan, WA

In the water I leave it down if my mooring spot is deep enough at low tide to do so...if not I leave it half way down...for winter storage I take the drive off and store it in the garage so it's a non issue...

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88 Four Winns 200 Horizon
4.3 OMC Cobra-4bbl
2002 Walker Bay 10/2012 Suzuki 2.5
2008 Walker Bay 8

1998 Jeep Grand Cherokee 4.0/Selectrac
2007 Jeep Grand Cherokee 5.7 Hemi/Quadradrive II