I see this as just another case of "internet experts" pushing their favorite family home remedies upon an unsuspecting crowd.
I hope that anyone seriously considering adding gasoline or ethanol to their diesel tanks will consider the REAL effects on hardware and safety. Your lives and your family's lives are at stake. This is a boat, not some 30 year old pickup truck. PLEASE, seek the advice of someone with credentials and experience to know the difference. And a call to your insurance company might also be in order.
If your injectors need cleaning, there are proven products for that. Need to kill some bio-bugs? There's a good product for that. Got water in your tanks? There's a way to remove that and prevent it from happening again. Nowhere on gasoline or ethanol do you see instructions for use for these issues. If you do this, you're setting yourself up for failure and financial loss. Sure...maybe you'll get away with it for some time, but the piper will need to be paid sometime. If it ain't labeled as a diesel fuel additive, it has no business in the tank.
Your insurance company might have a thing or two to say to those who have added unauthorized additives to their fuel and suffered a loss. Good luck on collecting in the event of a fire.
To those of you pushing your favorite elixir, show us the empirical data that proves, without a doubt, the veracity of your heretofore unsupported claims. And don't forget to include the SMS data.