Oh No/Gas in the bilge

[5th Tuition]

As you know; I just got the boat back from getting new three sided enclosure. I parked it in the yard so I could paint the bottom and wax it before putting it in the wet slip. I did the bottom and waxed the sides and noticed the grass on the yard was dead and discolored.
My first thought was some bilge water had run out and ran over the wet bottom paint and the chemicals in the paint killed the grass.
I stuck my finger in the plug hole and smelled gas. Oh No!
I hooked the boat up to the truck and drove it around the block and pulled it in front of the house (on a 30 degree hill). When I pulled the plug, two gallons of raw gas spilled out. (censored, censored, censored)
It's as if the tank holds half a tank, but anything above half spills out. I was hoping it was a hose, so I took up the floor covering and looked at the hoses. I can't see anything wrong with them, so it may be the tank. It's aluminum and 9 yrs old.
Headed to have it evaluated on Monday. Wish me luck.
5th (Marty)