There are many reasons for the declining attendance at football games - and, for a lot of years, the basketball games.
Huntington is located in a aging area that is also suffering from a declining population (mostly due to the lack of job opportunities).
There is absolutely no promotion of the sports to the general public - or, the student population (look at how few students attend the football and basketball games). There are no billboards publicizing the upcoming events, no television or radio advertisements, no signs (electronic or otherwise) promoting the next game outside either the Cam or the Joan.
The is no on-campus promotion or encouragement to students to attend games. When I attended Marshall, the Big Green actively involved the Greek organization with enticements for best attendance and loudest cheering group. This enthusiam bled over to the non-Greek students - and more of them also attended games.
Finally (and I'll get off my soapbox) to follow up on the IPTAY posts above, the Big Green only caters to the larger donors and has no programs to encourage new donors such as Clemson's IPTAY.
I truly believe that encouraging more studen involvement and very actively, and publicly, starting an IPTAY type of program would pay off in the long run (Marshall currently has less than 3,500 members in the Big Green).