I definitely agree with what David is saying, but I decided to go for improvement without maximizing fab and cost. I have two 12's (one port and one starboard) which the one port benefited greatly from any space in the observer seat. I decided to go the low cost simple route which was not ideal, but definitely helped my situation. Plus, many people on my boat do not even notice I did anything, should not hurt resale value, and cost $8. I purchased 6" Jeep Cherokee grill cover and ported my observer seat. Better ways to do it, but for an hour and $8...I am happy :-)