Many designs of modern spring rubbers come with plastic handles so the effort required to remove them is less. If you're using these in a race condition, you may need to pull a spring rubber during a pit stop to affect the setup as the track changes conditions. In a long dirt race, it might be wise to give up positions to make these kinds of changes if it will make a significant difference in lap times. Example: a dirt track starts out tight, but quickly turns dry and slick. You need to soften the right rear spring rate, so you pit under a caution and have a crew member pull one or more rubbers out of the right rear without losing a lap. Your lap times get better by a half second and you drive to the front. It could happen.