Find a good 7mm guys ditch the 3mm.
That will let you dive in 43 degree water if you want but right now is the best time to hit lake's and such due to no traffic! oh and viz..
when I started out I moved from texas and its warm most of the time so a 3mm is the way to go. Moved back to Arkansas and hOly-CraP BaTMan! so my wife and I got 7mm farmer John style and 13 years later winter diving is the way to go for me, But it is not for everyone!!!
And on the Bonne Terre I went their while working in the area and My work buddy is also one of my best dive buddy's. so we went their looking to dive while we were their and did the tour as well as the boat ride LOVED IT!!!
But the price was not for me. and after what I have see as far as post it may be one of those want dive's but may never happen till a few things change. :depressed:
And if your up to it guy's and gal are up for it my best friend and I are going to ORONOGO really really soon so we should make it a joint meet greet an dive!