Storing boat with drain plug open?

Discussion in 'Sport Boats' started by Searayguy185, Oct 12, 2017.

  1. Searayguy185

    Searayguy185 Member

    Jul 17, 2017
    2004 Sea Ray 185 Sport 4.3 V6,

    2008 Toyota Highlander Sport
    Mercruiser 4.3 V6, Alpha 1 Generation 2
    I'm sure this might be a silly question, however I'm wanting to store my boat and wave runner outside and want to leave the drain plug out so if water gets in the bilge it will drain and to prevent condensation. I've been told there is a risk of mice or other creatures entering in through there and potentially doing damage to the boat. Any thoughts or recommendations? Thanks
  2. Little Ducky

    Little Ducky Well-Known Member

    Jun 5, 2017
    Chattanooga TN/Dickson TN
    1998 SeaRay 290 Sundancer
    Twin EFI 5.0L w/Alpha 1 drives
    If mice want to get in...... they are going to get in.

    Boat covered?

    Leave it open and if you fear mice getting in through the drain opening tape a piece of window screen over it.
  3. BillK2632

    BillK2632 Well-Known Member SILVER Sponsor

    Jun 25, 2009
    Lake Norman, NC
    1999 185 Bowrider,
    Mercruiser 4.3, Alpha I
    Mine is in a dry storage building, no heat and not tight enough to keep rodents out. I leave the plug out over the winter, cover it, some damp rid containers - never a problem with rodents.
    Last edited: Oct 13, 2017
  4. QT1

    QT1 Active Member

    Oct 20, 2016
    Belair, MD
    1990 350 Sundancer, "Quality Time II". Avon rib w/ Yamaha 4 stroke. Upgraded Raymarine GPS/radar.
    7.4 Mercruisers
    The window screen idea sounds like a winner for your situation if the boat is not high enough from ground reach
  5. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    Out for sure. If water gets in it will freeze and can do a lot of damage if there is enough. Don't leave food on the boat. That will help keep mice out although you should not have an issue unless you are in an area with a bad problem.
  6. KevinC

    KevinC Well-Known Member

    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    1988 Proline Center Console - 90hp Mariner/Mercury
    1969 Boston Whaler
    Twin 8.1 V-drives
    One side note about this - you need to consider where you are and know the way your boat is stored in the event of extreme weather. Hurricane Sandy sunk many boats here on Long Island that were blocked and stored with the plugs out. When the water rose it filled the bilges and in essence sunk them in place. Those with plugs in floated and while many still took on some damage it prevented many total losses.

  7. Tonka Boater

    Tonka Boater Active Member

    Jun 11, 2008
    Wayzata, MN
    1997 232 BR
    502 MAG, Bravo I
    Agree with the others. Leave the plug out but more important, don't make the boat a good environment for mice. I empty my boat completely so there's nothing in there that would attract mice or other critters.
  8. Leardriver

    Leardriver Member

    May 24, 2016
    Denver, CO
    2004 270 Sundeck 8.1 Bravo III
    5.0, 5.7, 6.2 8.1 Bravo III over the years
    I always have it out. In Utah and Colorado, it is illegal to even tow a boat with the plug in. They want everything dry to discourage mussel growth.
  9. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor

    Apr 21, 2009
    Mice absolutely hate steel wool. But the problem there is that it rusts. Bronze wool is another good alternative to use to deter the little electrical-nightmare-creating critters.
  10. Ike

    Ike Member

    Dec 17, 2011
    Pacific Northwest
    1972 Sea Ray SRV 190 I/O
    12 Ft Rowboat
    8 Foot Sailing Dinghy
    Mercruiser 165 6cyl inline GM 250
    If your boat is stored on a trailer like mine is, pull the plug. It would take a very tall mouse or one with a ladder to get into the drain hole. Now if I could eliminate the spiders that would be great!
  11. WalterJ

    WalterJ New Member

    Sep 11, 2017
    '98 230 Bowrider Signature Select
    Mercruiser 5.7L w/ Alpha
    You could always put a few cubes of poison in the bilge so if they visit they don't stay long
  12. Jeff h

    Jeff h Member

    Sep 17, 2017
    2017 Sea Ray SPX 210
    4.5 merc, Alpha drive
    That would have to be a tiny mouse to get in that small drain plug hole but I guess it could happen if the mouse was determined enough.

    If there was food left on the boat, mice might be something to worry about. Make sure to clean it all out and you shouldn't have anything to worry about.

Share This Page

Show Sidebar