Just before going hot I had purchased 2 new reels of 1/2 Tricoflex, so I haven't up graded yet to a smaller bore hot hose. But will do in the near future.
However twice I have noticed a drop in flow when 2 off us are working off one pump and one fogwash, and both times it was because the hose had been out fully and when rewound, because of the hose been soft it squashed the hose tight to the drum slowing flow.
Roy