BOY'O it was hard work but i finally got it done. $66 for 18m of 1/2 from Bunnings
It looks easy hey... well it aint

i had a good old time geting it bent around the keg and it kinked slightly at the 180 deg bends for the water to enter and exit. I am not overly worried as it should still flow heaps of water....
I want to rig up some pump and then circulate the spa water out the back for cooling that way i can run it flat out without using water

and heating the pool hehe
I used some fishing line to hold the coil's nice and tight will this pose a problem?
I am also looking for a tap then pipe for the sparge water into the mash tun. I bought a ball valve and some brass fittings to make it work and some washing machine hose for the hot water , i dont think it is food grade so it worries me... maby the nylon hose i use for the secondry? will get soft but is it ok?
otherwise i will need to rig up a copper pipe setup and not being a plumber or trades person this will be funny