Time to switch styles?

I'm currently riding a 7'6 foamie and have been for the past month, I've basically mastered my popup, stance and white wave wave catching, I've been catching medium sized unbroken waves with it but it's not very manoeuvrable and terrible when it comes to large waves because I just nose dive no matter how hard I paddle because the water rises too fast at the tail, is it time to switch over to a fish board?
I'm not sure if I'm ready for shortboarding in general, any suggestions on what to do and what type of board to use?
I'm 1.65m (US: 5.4 feet) and I weigh around 50kg (US: 110 lb)
Thanks in advance.
I'm not sure if I'm ready for shortboarding in general, any suggestions on what to do and what type of board to use?
I'm 1.65m (US: 5.4 feet) and I weigh around 50kg (US: 110 lb)
Thanks in advance.