Temporary Fuel Tank
If you want to buy some time and evaluate fuel tank repair options (without missing sailing days), you could rig a temporary tank from a basic, plastic outboard gas tank. That's what I'm currently running with since pulling my aluminum tank last month.
The 3 gal tank gives a 35 mile range in an E32. Carry a spare 5 gal diesel jug, and it's nearly a 100 mile range. In a 38 footer, though, I might try a 6 gal tank.
You have to add a vent port and a fuel-return port to the tank. I did this by tapping into the supply-housing (the thickest plastic on the tank) with a 1/8" NPT tap.
The 90 degree elbow on the right took a 1/4" hose for the return line (this location is nice because you can visually verify pump priming, i.e. fuel return, through the clear tank quantity indicator).
The vent line required a 90 degree elbow on top of a 1/8" pipe nipple (in order to clear the housing to thread it into place). From the elbow, I ran 5/16" hose and a 5/16-to-5/8 hose adapter to match the existing vent hose at the stern.
Supply line is 3/8" hose with a barb-to-flare adapter that threads directly to the boat's original copper supply line.
It's been working well. I'll probably run with it all summer and deal with the aluminum tank this fall.