Rather than throwing them away, I re-fill and re-use my 1 pound tanks.  I bought an adapter that fits on a 20 pound tank.  I screw it securely onto the big tank and then turn the tank upside down and screw a small tank onto the other end of the adapter.  Then, I open the valve on the big tank and it fills the little tank.  It only takes about 30 seconds to fill.  Then I close the valve and remove the small tank and cap securely with a brass cap until ready to use.   Then I screw on another 1 pound tank, open the valve and repeat the process until they're all filled. This saves a lot of money and isn't too challenging.  I usually do about 12 at a time and have never had a problem.  They don't get 100% full, but they get pretty close.

I bought brass caps for the 1 pound tanks just so I can make sure that they can't leak if there are any problems with the internal valves.  It's not a necessity, but I feel it adds a measure of safety .

If you do this the absolute most importnt thing to remember is DO IT OUTSIDE with plenty of ventillation and no ignition sources nearby.

Just joined the forum, but have been following/reading for a couple of seasons.

Finally found some crappie off C1 last night.

Slab, what tournament?