Lets put it this way.
I filled up my Grandwave 50 with 350m of .55 mono the other day..... and Dougie from Gremlins that did it for me, said that I could still get 300m of braid on as a backing.
Naa, too expensive, 350m should be enough.
The very same night, I was almost stripped by what could have been a big skate or a sandshark, I probably had 20m of line left on my spool when he finally turned.
All I could think about was "jeepers, I wish that I had the braid backing, jeepers, I wish that I had the braid backing, jeepers, I wish that I had the braid backing"
I eventually lost the fish when my leader popped.
I can promise you this that even the thought of spending R100 on a case of beers seems ludicrous, until I have saved for 300m braid backing.
When we are fishing for big fish, we need all the help we can get and just think about how much an extra 300m of line will help.
I also now use a nylon coated steel leader attached to my nylon leader, so that I can prevent being burnt off at the ring, and it will of course give me massive protection against the bricks.