Good luck! I just came back from Maun, and also Namibia. I spoke to most operators in Maun, and everyone said that I came too early and that recruitment season is end of January.
The locals are really friendly.
Have some fun whilst waiting... I rented a C206 & did some low level flying over the Okavango. You can also book a seat as passenger for a scenic flight for about £30. Mackair & Sefofane looks the best.
There is a small flying school with 2x C172s to rent. If you fly you might come in contact with the right people.
Watch out for big snakes & scorpions!