My take on it is simple even though I have only used CRs for 2 years. If I added a shock spring to my CRs that would add a lot of money to the line for my start up price. I run 10 dozen CRs at a time. If you took the money to buy springs and used it to buy more CRs, you would catch more coyotes to make up for that one that got away. Heck, you might even catch that one again. To me the CR is simple and it works. Yes there are chew outs and break aways but loosing one coyote is worth it to me so that deer can break free and we can continue using them in WI. Again, just my thoughts as a newbie with CRs.

I understand your point about the money investment. However, why risk educating a coyote? I also think that a 50 lb inline spring will still allow a deer to break the BAD. But, I may be wrong on that.

If a person is worried about an educated coyote then a Cable restraint is not what I would recommend. The only thing I have found that really helps is to run 1x19 with a inline swivel. I would also think a spring would Help your chances of holding a deer (especially a young deer) given our entanglement laws and a 350lb bad.

Educating coyotes?

I have personally caught a coyote that had a loop around I's neck. It was a chew out.
I know of at last 3 other trappers that have also done It.

Beav, I think you've seen it all over the years. Lol.