our 11.2 pony is going onto a 2 acre field. the grass is not very long but there is plenty of it. she will alone for the first 3 weeks untill she is joined by our 15 hh horse. do you think i should limit her grazing by strip grazing? shes not too over weight at moment, but i dont want pigging out and turning into a fatty!! what do you think? she will out 24/7