Hi mate.
I am of the same mindset as you this winter. Once the season is over for me i (Nith into November

) i will be having a go at the pike.
Last week i bought a season ticket for Lochwinnoch angling club see here
St.Winnoch Angling Club Home Page
Ticket cost me a whopping £15

and runs till march.
The Barr loch and castle semple hold plenty pike. There is also Kilbirnie loch/Kilbirnie angling club. I think the club hold Pike fly fishing competitions here. Give RT cycles in Glengarnock a wee buzz. They sell tickets for both.
If you want a wee drive then i would head for loch katrine. There was an article recently in one of the monthly mags (cant remember which one) that featured this loch. It has just been re-opened for angling and im sure would hold a few surprises. See here....
Home - Loch Katrine Fisheries
Drop me a PM if you fancy a day out for the Pike. Once im done with the salmon season i'd be up for it.
Tight lines
Paul