Hi ya Nic,
There is a beach hire guy on Main Beach right in front of the surf club. He has a variety of SUPs nothing too extreme but mostly for learners.
Next best is SUP Noosa, talk to Hayden or Harry they are at Noosaville on the river but will deliver to your accommodation. Look for the Orange Truck.
Adventure Sports in Noosaville also have a variety plus demos.
Noosa Stand Up Paddle is also at Noosaville and also deliver, talk to Rick or Donna Lee.
Apart from them you have to go to Maroochydore.
Have fun. Pm me if you need more info.
ET.