Ethanol fuel has been around long enough that fuel lines have pretty much all been converted over to ethanol resistant. Don't think that you have much to worry about there. As for primer bulbs, if your boat sits outside 24/7 like mine, you will just have to expect to replace them more frequently. It has been my experience that the bulbs have crapped out on me while either on a trip or on the water so I make it a point to carry an extra kicker bulb and an extra main motor bulb on the boat with me.