I have a 2005 Mercury 150 XR6 that is giving me problems. When I first start it in the morning it starts fine and will idle and run just fine. After I sit and fish for awhile and I go to start it again , it does not want to start, and when it finally does I have to rev it up to get it going, then when i take off it wants to bog down and I have to gun it pretty hard to get it up and going. This will go on the rest of the day. Anyone have an idea as to what to check ? I have been using 92octane fuel, could this be a problem ?