ok. I thought there may actually be a way to use COINS to improve my equipment, but apparently not. So the headline on the Daily Spin pop-up is NOT true. You CAN'T improve your equipment by winning coins. Renting equipment doesn't improve MY equipment since it's not mine. I was just wondering if there was a way to use the coins to purchase (improve) equipment, but i guess not. Oh well.
On a side note, can you gift the coins to someone else? Or is the ONLY use for an owner to rent equipment?