So, been reading quietly now my comment....
My take on this is....
* It is unsafe and dangerous to use PVC as any part of ground rails, jump poles or fencing for that matter when it deals with horses... There is a specific PVC used for horse fencing that not break into sharp shards....not what you find in any local home improvement store.
The force a horse puts on a piece of plastic is incredible PSI and you are inviting a disaster to save a few pennies of money, in reality you will probably spend tenfold if a injury occurs.
PVC is very light and blow in slight breeze so if you placed, you need to realign, and check spacing it is accurate and not shifted...a slight tick is going to send the rail moving and yes, it can really twist a animals body "wrong" doing damage if contact is made.
- Particular trees are grown and harvested to make poles/rails and they meet a certain standard of diameter size {3.5"} and not less than 8' long and as much as 12' is what I have encountered in my experience. Wood rails used made from intended grown/harvested trees are not light and flimsy...you know it when you start moving them around.
- Landscaping timbers can work and do work if you want to make your own, but they require some work on your part so they look the part and last a decent amount of time. The timbers I refer to are often found in home improvement stores and are the longer ones, again anything under 8' in length to me are to short to use.
* If using landscape timbers you need to do some prep work to make them last and be seen best by your moving horse....
Purchase KILZ Primer, water-based caulking and paint the colors you want those rails to be....
[standard color is white for visibility the horse sees] and lesser amounts of contrasting colors, painters tape and you need a tape measure.
Clean all rough edges gone, caulk all cracks gone on each timber piece all the way around it...let that dry well.
Now prime and allow to dry...now paint several coats allowing drying time between coats...more coats less thick also sticks better.
Now if you want contrasting stripes, tape off evenly spaced from the end, the width of the stripe and make sure you tape it completely around... Design if you just want end striped or end and center or a combination and understand what having those stripes located are truly the guide for...
Paint the stripes, allow more drying time than carefully remove the tape so neat, crisp & clean lines appear...
Make sure you also paint the ends to seal out excess moisture since these will be sitting on the ground in all kinds of weather...
You now have a selection of rails you just made in colors of your choice to use....when they get a beat "ratty" or beat up looking, get out the paint party and spruce them up.
Below are rails, from finished and stripe designs of what your imagination can create, to the plain...
Do notice how the contrast is seen in certain arena/footing conditions...it
makes a difference.
Well, that is what we did and still do today.
Rails can be round or not, need to be longer not shorter since you will be going over/across them and need to see/view them as does the horse approaching.
There is a difference in appearance of landscaping timbers and actual round rails intended for equestrian use and of course the cost is your to decide on and use you wish.
Please skip the PVC for your horses benefit and less chance of serious mishap as PVC splinters easily when exposed to sunlight and hoof-strike far to easy. A gentle tick of a PVC pole often sends it flying catching the horse as it travels and then you got injuries, often unseated riders and bronc horses as a result.
🐴.... jmo..