It may be the incorrect way to use the fork style, but I don't install the hook and fork in the coil only. I remove the shock and shock mount. I wrap the fork with two layers of duct tape and place it on top of the shock tower. I then run the hooks and bolt down through the spring, hook it on the lowest coil possible and compress with the impact. Drop the LCA out of the way and decompress the spring. Also, grease the threads on the compressor bolt. I do it this way because I prefer the spring to be captive to the car until I chose to release it. Has worked many, many, many times without fail.