Why not have 1 home game, maybe Halifax as you'll get more away fans too, where its a fiver all round or kids for free or do what some clubs have done whereby you pay "what you want" (min £2 maybe)- Season ticket holders get a free programme/beverage etc
We're on a good run now, its nearly end of the year, why not try out some different approaches?
I remember Morecambe did a free entry thing and got national coverage of it and the publicity helped get over 4,000 there (OK gates have gone back to sub 1500)