Hi TC,
I'm from west michigan and I'm sorry I don't know who to use in your area. I know of at least 4 PB members in the SE MI area who had ponds dug and they do check in the forum from time to time but not every day. There has been recent posts from a member who is building a pond in SE MI and is having issues with it not turning out as he had hoped so probably he could tell you who not to use.

You could use google to search for Michigan pond and pondboss forum and probably find those threads rapidly. You could try private message to the SE michigan folks and they may see that in their email and respond that way.

Hopefully one of them will chime in.