Soft luggage options advantages disadvantages

[emptysea]

A word of warning. NEVER PUT A TANK BAG DOWN ON THE FLOOR OUTSIDE!

I made this grave mistake when working as an instructor. I took the bag off for whatever reason (have a look at the petrol level?) and where I'd put it (industrial area) the pavement was awash with tiny iron filings.

I saw them before leaving, all sucking onto the magnets, but couldn't sweep them off. Ended up having some scratches on my tank as a result. Couldn't be too precious as students were waiting to be taught.

Did the same thing and my CB's tank is scratched as a result. I will get it fixed, but it really sucked because it was only a month or two old.

Anyone finding Tank bags that fit our CB very well? My older Ninja one fits OK but uses 4 straps with metal clips on the end that go around the tanks bottom edge, kijnda works, but seems like magnet style are the way to go now.
I saw this small ( 8"x15"4.5") but am thinking the magnets would not folder over the edge of our tank like it needs to...
http://www.joerocket.com/catalog/index.c..._Tank_Bag_

or this

http://www.tbags.com/tank-n-tail-bag.html

I bought the Icon Urban tankbag/backpack for my wife's bike, then she went out and bought a new bike with a plastic tank so I use it on my CB. Works great, but get some 3m film down on the magnet contact points to avoid scratches.