People will never embrace the $1.00 coin until you stop printing the bill. In Canada they just ceased making the ones. A few years later they stopped the two dollar bill and made a $2.00 coin. People grumbled about the extra weight in their pockets for a while, then they got used to it because there was no choice. Our $1.00 coin has 11 sides and is the same size and color as yours. It really isn't hard to tell the difference from a quarter. People just don't like to change.
A customer of mine used to give all his change to his kids at night. A month or so after the $1.00 coin was introduced he realized he was giving his kids $5.00 to $10.00 a day.
Needless to say he started spending the dollar coins!