Yup, definite must. A farm vehicle without a chain is like a trailer without ratchet straps!
I'm partial to a short one and a long one, lots of implements are a cinch to move slung under the forks using just a couple feet, and wrangling the 20ft chain every time gets old!
'Theoretically this level of creeping Orwellian dynamics should ramp up our awareness, but what happens instead is that each alert becomes less and less effective because we're incredibly stupid.' - Jerry Holkins