I am unable to attend any Thursday meetings so this idea may have been raised and dismissed. If so I apologise for wasting time.
In addition to the 50/50 draw would it not be possible to instigate a "Time of Goal" draw. You would need to divide the match into either 90 minutes or 180 half minutes with a ticket stating the time on each. The person holding the ticket corresponding to the time of the first goal (or to keep interest longer, the time of the last goal) would win the jackpot.
Assuming you sold 180 tickets at a pound a go and gave a jackpot prize of £80 you would make £100 times 21 home games giving the club £2100 revenue for the season. If you dropped the prize to £50 (I'd be happy to win £50!!) you would increase the season's revenue to £2730.
If you knew your market and could sell say 270 (20 second intervals) your overall revenue, with a prize of £70 would exceed £4000.
If you overestimated your ticket sales you could have a rollover if the winning ticket was unsold.
As I say, this is just an idea which may have been discounted, but it seems such an easy way to bring in quite a large amount of money for no great effort.