Should my tunnel vent immediately?

Discussion in 'Boat Yard Basics' started by rjackh90, Jun 11, 2014.

  1. rjackh90

    rjackh90 I Love!

    I just recently bought a a 1652 vented tunnel southfork aluminum boat with a 40 horse merc 2 stroke on a manual jackplate. On plane, I get a lot of spray to either side of the motor with some splashing over the transom. After a few seconds, the tunnel vents, all the spray stops, bow drops, and I gain speed. I am just wondering if the tunnel should vent on its own while getting on plane or if this is normal? Should I get on plane with the vent closed, then open the vent? Just wondering because this is my first tunnel and it does not vent as quickly as this video:

  2. Brett

    Brett > PRO STAFF <

    From my experimenting with pocket tunnels,
    the tunnel should always be vented to minimize turbulence and drag.