My boy was bustin my chops

[Blue_Runner]

I'd like to take mine out of Beaufort to Big Rock. Its 40 miles one way. I have a 20 gallon tank beckoning me to make use of it. I figure I can put it underneath my rear bench seat and it won't be in the way too bad. I want to make it removeable but as user-friendly as possible. Which presents a problem. I can make a 120 mile round trip on my 60 gallons but it will be pusing the limits too far. This way I'll have 26 extra gallons (counting my 6 gallon tank I run the kicker on).

How far will you be taking your V round trip on 60 gallons?