Free: Contests & Raffles.
Since you put the name of the lake, I'll go ahead and ask how the hunting is there? I'm up in Kent and if there's a place nearby I can get some birds out of, I'm there.
I think its more hit and miss. Weekends suck there and weekdays are slow most of the time. Lots of sitting and waiting and yes there is normally 1 flock of geese that fly's over everyday. Usually too high though.