Are your poles along the rail or middle of the ring???
I use to use middle of the ring...
Not just ride over them but use them to do serpentines, suppling and steering exercises to kind of mess with the brain and make them think.
I also would say have 5 ground rails...ride at a diagonal and pick up one or two rails, granted not centered but the attention was suddenly on the job in front of my horse..
I also sometimes did not make a line of rails...but a box of rails (Figure-2 below)
so we worked on cadence, pace and steering being supple...no the rails did not touch...they were spaced and had between 4' -5' so we could cut across and then still pick up a part of the ground poles to wake-up my horse who got complacent very easy...to easily bored he was.
Some, a few ideas of what you can do with a few poles... the diagram below is from pinterest.
Here is a link though to many more examples... https://www.pinterest.com/pin/335236766003302764/ sorry for the sizing but you can clearly see many fun things to keep the mind with you not in outer-space..
We also did do some ground pole to a cavaletti jump of 8" cross-bar...stride or two of canter and here came another set of ground poles...
Took a lot of man-hours changing things up...
The barn I was at loved it cause I would set up courses, leave for a week and rip it apart and do something different...I got bored too watching others just jump, jump and more jump.
Boarders who jumped loved-it as something new and challenging appeared often.
Once you can get Teddy to stay mentally focused, do grid work, bounces and such if he is agile, if he isn't agile he will get agile or hit rails often.
I would offer caution
since it is Teddy that is returning from a injury or is that Pony...either way, slowly introduce as the horse must also build muscle memory to do rails and jumps of any size, combination or height.
This might give you some ideas...
From the link below comes a reference for striding distances..
The book Cavaletti by Ingid & Reiner Klimke is a wealth of knowledge that works too and I found fun to read.
Have fun with the project...