Chaunc has attended some of our West KY gang's "Shindigs" ... so he should be able to compare situations & come up with some good suggestions on what's needed & how to set one up.
If not, you can always look on the KY forum and search "shindig" ... or even "Spring Fling" and check out the threads associated with those two "get together" events and get some ideas.
If you have food, prizes, close lodging, a picnic/pavilion area to set up the cooking, someone with the needed "cookers", and a fish cleaning station close to the place where the event will be held ... then you've pretty much got it going on. Anything else, like seminars on techniques or electronics setups or understanding depends on who attends.
Prizes can be solicited from site sponsors, Member Sponsors, local businesses, etc.
Food & prep items can be obtained from attending members.