G'day
Prawns usually from feb through to april, march. With quality getting better around easter onwards.
This year for me was funny, the run wasn't as long but when I found them, I got more and of a much higher quality. Best cast being 37 banana prawns around the 22cm mark.
What you have to understand is it's all about then local area, go and understand and know the local area and you will have success.
Dave