We do it like smrobs does. Throw them in together in our stock trailer, never had issues, even when hauling horses that were not our own. Even when we had a real horse trailer with dividers, I hated them and pulled them out and hauled like it was a stock trailer.
As far as how many you can get into a stock trailer depends not only on length but also inside width as trailer vary in width. We have a 24' X 7' stock trailer, 4' of it is tack room and we can get easily get 5 or 6 horses in, maybe another or two if we head and tailed them.
I have no issues with the open tops or half top trailers, the half tops are fairly popular in TX from what I seen and we took an old Charmac, cut half the top off, and built a cage/frame for the back half, and lifted it 3" for a brush beater trailer. The pic below shows what it looked like half way through the renovation. I liked that little trailer! Didn't like it when it rained and my horse was in the back though..LOL
I DON'T LEAD 'EM AND FEED 'EM, I RIDE 'EM AND SLIDE 'EM.
Last edited by COWCHICK77; 12-06-2013 at 12:51 AM.