I have an 2004 185 Bayliner with the 3.0 Merc. There is absolutely no insulation on the inside of the dog house. I was in my buddys 195 Stingray this week end and noticed how quite his 4.3 Merc was. I looked inside his dog box and found what looked like a spray on insulation. Does any one know what this stuff is and how I can get some?