I got a mixing paddle from Bunnings for $21.
Heavy and robust with a smooth rounded edge - it will not damage de pail.
Boiling water + 50% of the sugar, mix for 1 min, add rest of the sugar, mix for 4 min. And I got a 2:1 sugar syrup with no sugar crystals at the bottom.
The negative side.
This $21 paddle has an SDS+ fitting, and I didn't know what that is. I always refered to it as qiuck chuck fitting.
As a result the paddle has a bit of vibration in a normal chuck.