Hi all, I'm thinking of gettingthis for DS. Our wheelchair services won't help towards buggies of this size due to their impracticalities. However we spend most of out time in the peace and tranquility which normally is rough terrain. I am sick of trying to get his wheelchair through it. My friend loaned me the smaller version and I found this quite tough to use at times. Can anyone advise of something different before I get this one??