Looks great Carbymaster.
I reckon just weld 3 legs (square ERW or flat bar) to the edge of the weight (maybe round the end of the leg with grinder so it will weld nicely around. Gives that bit more safety.
I just used the one I bought at Bunnings - they had them out for clearance last week at one store only - was 25, down to 18, then down to 10, and finally down to $4. I couldn't believe it, but they went thru for $4
Regards
Tyler