Howdy once again

Today I'm going to have a go at pulling the cowl apart and cleaning out the fuel tanks - Ive already noticed Ol Blue's fuel tank s terribly rusty inside.
I know cleaning out rusty old fuel tanks is a contentious issue, and at the risk of opening a can of worms, I'd like to hear your thought on it.
I normally go overboard:
1: Quarter fill with petrol and a hadfull of nuts and bolts and shake like crap for 5 -10 minutes (loosens all the loose flakey surface rust)
2: Flush it out really well with petrol/water/high pressure water
3: Mix up a brew of Water and Molasses at about 10 water to 2 molasses and fill the tank.
4: Let it sit for about 3 or 4 days, longer depending on how badly rusted it was
5: Drain and flush really well
6: If its a really important tank - restore with POR15 Fuel Tank sealing kit.
I think one lot of POR15 will do all three tanks, plus a little Honda X75 fuel tank that I am also restoring at the moment.
What do you guys do??
Gordon