I have a 2005 150CC with a 50hp Yamaha, which I purchased in February 2006. Living in upstate New York, on Lake Ontario I have not had a chance to do much with the boat except look at it as it sits in my driveway covered with it's winter tarp. Spring is still a a few weeks away for us.

I dropped my car keys on the ground yetserday, and as I bent over to pick them up, I noticed two holes in the forward section of my hull. They look like they are are moulded right into the hull behind a strake and under the forward fishboxes. I did get 4 drain plugs with the boat, 2 black plastic threaded ones with red washers and two brass and rubber with a snap lock on them. From what I have been reading here and on other sites, I figure the 2 black plastic ones are for the transom, as there are two threaded holes there too....one centerline and one a few inches to the right of that. I didn't know what the two brass plugs were for untill now...I think. I am guessing that they are to plug up those two holes in the hull. Am I right,? and am I supposed to install them from the inside- out or outside - in??

I have never owned a trailerable boat till now, and certainly never one with thru-hull fittings without seacocks.
I will not be trailering this boat at all, it will be sitting in a slip at a marina from April 15th through October 15th. Also, I don't fish...so would it be better to have these holes sealed up permanently?

I am totally confused about the water retention problems I have been reading about.

Any help would be appreciated.

Thanks,