Travelled 11 miles, first job sunny at front and son was using tricoflex hose, he was doing fine, I had microbore and no joy for me at the back, out of the sun.
Son came round the back and his hose froze up as well.
Drove home and thawed hoses out, had some dinner and went back out.
Did a £20.00 house, both hoses fine, and then drove to another 2 houses and microbore had frozen again, but tricoflex was ok.
So my conclusion is, use the tricoflex hoses on the cold days.
Will have to carry a spare hosereel with tricoflex on !!