I don't seem to be progressing

I've got a 7'4 funboard / fatboy flier, whatever you wanna call it, I've been riding it for about a year, year and a half now. I put in a fair bit if time, averaging maybe two weekends a month and the odd week here and there but I don't seem to be improving.
Since I bought it I've learned to catch unbroken waves although my positioning frequently sucks.
My main problem seems to be stalling. I've tried a lot to compensate for that like moving a bit further forward on the board and staying low to start with but I don't seem to be learning as much as I'd like.
I know people (essex!) who've learned on shortboards and I was wondering if maybe I should buy a second board to see if that helps or maybe take a lesson or two.
Any thoughts or advice please?
Since I bought it I've learned to catch unbroken waves although my positioning frequently sucks.
My main problem seems to be stalling. I've tried a lot to compensate for that like moving a bit further forward on the board and staying low to start with but I don't seem to be learning as much as I'd like.
I know people (essex!) who've learned on shortboards and I was wondering if maybe I should buy a second board to see if that helps or maybe take a lesson or two.
Any thoughts or advice please?