I purchased one of those swivels last fall, but haven't got a chance to install it yet. Looks like a straightforward job. I believe the seat latches in one of several rotated positions - it doesn't just spin freely, so sudden movements while clutching & braking shouldn't be a concern. Sure wish I had it on the tractor this winter with all the snow I moved with a rear blade. My old, arthritic back & neck were not happy about that, and let me know about it.