Join Date: Jan 2012
Location: An English Girl living in beautiful Alberta, Canada
• Horses: 0
"I basically have to spray, soothe, spray, soothe..."
And herein lies your fundamental problem.
You need to spray - tell him not to be a jerk - spray, continue spraying, spray some more, then give him a pat.
This won't solve the clipping problem, but will increase your likelihood of solving it. At the moment he is successfully teaching you to stop the scary spray when he makes a fuss. You need to teach him that any kind of scary thing (be it clippers, sprayers, plastic bags, shadows, or rustling paper bags) is not scary because you say so.
This is a whole new thread of training though - but please take it as food for thought on your approach to his spooking issues.
On the clipping question: if he is uncomfortably hot, then get him sedated and clipped in the short term. Sedation only works for a short time for a clipper-shy horse so expertise is needed on the clipping side.
You will then have the summer, the winter, and all the time in the world to work on the sprayer/clipper/noise issue training.
Get up, get going, seize the day. Enjoy the sunshine, the rain, cloudy days, snowstorms, and thunder. Getting on your horse is always worth the effort.