Like a few other ppl I have paddocks and roadways from dairying. The original dairy paddocks have two strands of wire. Silage fields and rough land has only 1 strand. 3 Group sizes will vary between 20-30 cows per bull during the summer and then heifers and bull calves get divided into 2 mobs in Sept.
Field sizes vary from 7 acres up to 21 acres, with most of the paddocks about 3 acres. Silage fields are split down the middle with a trough half way along the middle fence, I keep the strainers in about 10m so that the headlands can be mowed all in one. I subdivide paddocks this time of year and in the autumn with temporary fences, in an odd place I would use a temporary water trough as well, see pics below.
I use 3/4 inch hydradare everywhere except in the yard. Troughs are mostly 70 gal jfc, but from now on I'll be replacing these with 150 gal concrete troughs to keep badgers out. All the pipes around paddocks are above ground which means I disconnect at silage headlands
If I was to improve things I'd put a few rolls of sheep hi-tensile wire along the end of roadways near the yard to stop calves getting through the bottom strand. I'm also starting to put in creep gates between paddocks.
First pic is how bare a silage field got cleaned off last week,
Pic 2 and 3 are a temporary trough made from a 200L acid barrel,