I can’t remember who I learnt this from, a proper old ‘nagsman’ I think, but it’s a useful one.
In the winter I trim my horses’ tails slightly short, so that the ends don’t get muddy when they are turned out (or hunted, when I used to do that!)
In summer I let them grow quite a bit longer, maybe 4″ or so longer, so that they are a more effective fly swat!
Simple, but makes things easier for me (in winter) and the horses (in summer).
