I owned a chain of retail stores for about 8 years and we had slate floors down around the tills.
Every new starter who’d not stood all day before used to struggle so hard with sore feet and other concerns like that (even me). After about 3 weeks of just powering through it they would all be conditioned and fine from then on.
You might just need something short term until your feet get conditioned. Get some really plush insoles for your shoes and power through!
This is so true. Your working out muscles in your feet constantly balancing and gripping on the board. Try doing some strength building exercises for your feet. Also the right shoes definitely help. Im sure the mat would help but my feet have gained a lot of strength and endurance by powering through and stretching