Silage Pit Bags/Mats

Got a share of mats off of crumb rubber mainly for the maize pit. They are about 40kg in weight so would be better if there are two there to put em on altho you can slide em on the plastic easy enough. Thought they'd be the job but we are exposed enough here and came out one day after a bad night and the wind had leifted 8 of them off the pit and the plastic was fine so the wind actually caught the mat itself. That and the feckein crows still go between em the bastards. They are dear to be honest main positive is no water and ****e like with tyres.