Go with twins....

Of all of the 29' Fountains we sold, we only sold one with twins - twin Scorpion motors as a matter of fact. Not as fast as all of the others that went out the door with 500's and 525's. BTW, we never sold one with a single 496.

29's fuel capacity is more than double the 27, I believe. With a big tank and single motor you can cover a lot of ground in a 29. The 27's tank will keep you close to the fuel dock.

I had the same experience. Fuel tank was too small. ...but now, I think the tanks on my 35' are too small too!

Very true. Extra fuels tanks.

Total derail but where did you get the bilge light bases they look to be metal?

I figured that's how they came. They are metal.

I bought the boat off my friend/mechanic. He built the tanks so if it's not factory, I'd say he made them.

Not factory, they are plastic and break. If you can get more I want some! lol

How many gallons are each tank?

They are close to 15 gallons each. He installed them right, look factory.
When I get low on fuel, I open the spare tanks and pump them into the main tank.