There are several different possibilities for the noodles. One is to make a frame out of PVC that slips over a metal fence post, and attach the noodles with zip ties to the frame. They typically do not hold up well in windy areas, like outside. Another possibility is to use 1/2 noodles and attach them to jump standards so that the horse goes between them. You gradually move the standards together so that they eventually touch the horse.
I have also seen "car washes" (which is what we call the overheard noodles) made from tarps cut in strips or indoor outdoor carpet strips mounted between 2 trees.....we have one on our trails.
OP-I agree with doing all different obstacles, including balloons that touch the horse (eventually....you work up to that), bridge, as has been mentioned, but if you build one that is an arc, it also serves as a teeter tauter. I would also be trying to hang things off the horse (tarps, gallons, raincoats), make him drag stuff (kids sleds, logs, bags of cans)......get him used to things touching him. I have a feeling that will be difficult for him, and may take you some time. I also use hula hoops to practice moving one foot in a certain direction.
THe tires that you step on are great, and the latest I have seen is actually several in a row, ranging from small to large, all filled, that sort of form a bridge you walk across. It is an interesting challenge.
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