http://stats.rleague.com/rl/crowds/penrith_vn.html
Um, check out the "highest crowds" section and look at when they got their record crowd? That's right, just under three years ago. Also, look at what their crowd averages were like in recent years when they made the finals during the past 15 years? All they need is a good year on the field and like teams that were in the doldrums and then performed well, the fans will start turning up in full-force to their matches. Easy to kick an injured person when they're lying on the ground defenseless. After all, it was only a few years ago that Souffs were regularly getting a paltry 6-7k to home matches. Then the year their made the finals for the first time in 18 years, their average home attendance increased by 50% and has been strong since then.
It also doesn't help when their highest drawing home fixture vs Parramatta will be on Monday Night. As well as having home games during the heat of the day in March, where it was stinking hot and humid . It doesn't help when you get dumb scheduling (just go and ask the Sea Eagles fans who have a plethora of MNF games this year), which has a big impact on club memberships that are vital for long-term growth.