150hp does a great job. I have a spare 20 gallon tank I thought about making it an above deck removeable unit. I don't think there would be room in the belly of my boat for an additional tank. If you have the boat apart and see room for a tank I say go ahead and drop one in.
With a 4 stroke I doubt you'd need additional fuel.
The more I think about it I seem to remember we still had 12 gallons in the tank that day...."48 gallons" is what I'm seeing in my head when trying to recollect how much we put back at the end of the day...still too close for my comforts!
Best of luck
__________________
1994 Wellcraft V21
|