How's things? Good I hope. The hose I used was a custom made HEL brake hose from a UK supplier:
I'm sure there are similar suppliers in the US.
These guys can provide UNF threaded unions at each end included in the price and also any mounting scheme that you might need, they also put a 90 degree adaptor on one end to suit my installation.
The hose I used was 2 ft long and installed in a 'C' shape, with a big rubber grommet to support the middle section. I used about 9" of 1/4 steel pipe at the hot end to ensure that no heat crept back up the hose, especially when stopped after a long run.
These hoses are designed to be flexible and for very higher pressures, much higher than we are likely to reach; so I considered it to be a good choice. The important thing is to ensure that it can't get too hot. Anyway I'll monitor it with care! It's got to be better than relying on a coiled section of metal pipe.
@ Harold - Cotswolds... try to stop me!