Welcome to the site Bassman! Been a long time since I fished Beaver lake, went there a couple times for largemouth when I was a kid. Moved to MA last fall from Kansas City, MO, but grew up mostly fishing the rivers in southeast MO.
I'm not gonna be much help with your trolling questions, but did want to welcome you to the site. You might want to also browse through the forums for other landlocked states, as many of them contain some good tips for other lakes that might apply, in general, to Beaver.
Good luck out there!