I bought a seat for my scooter and to be honest I hate using it, I've only tried it for a couple of minutes and it's.. well very bad, you don't have the same stability as you would have on an electric e-bike or regular scooter, I have a much more control over the scooter standing up. Also if you're using it for 20 mins trips, it's definitely not worth it.. but this is just my opinion
What scooter do you have?