I fish beaver about every year when I go up to my family reunion. ( I'm from NW Arkansas) That clear water will present some challenges. Possum Kingdom Lake west of Fort worth is very clear for a Texas Lake and will have similar issues. While not as clear as beaver, I could see sand bass someone had filleted and dropped by the Courtesy Dock at the cliffs resort in 30 feet of water this past spring.
Here's what works in clear water at PK:
1. Shade - if you make a brush pile, put a piece of plywood or something else to make shade in the pile. Shade trumps cover in clear water.
2. Try night fishing - Last year was the first time I could regularly go out and come back with a full ice chest of crappie at PK. Night fishing docks with mercury lights close to the water was the key. Green lights draw lots of sand bass and stripers but the crappie avoid it, as they will end up being dinner.
3. Go with very very natural colors. I caught some crappie up at Indian creek trolling for stripers using Rapala jointed Fat free shad in this color.
At Possum Kingdom there are too many trees to troll, so I fished primarily with a white Giltmore Fuzzy Bug during the day and Tipped with a minnow at night.
This spring your could spider rig 4-6 poles with fuzzy bugs in 1/16 oz and catch some up the creeks.
The hwy 12 bridge might have crappie on it. I have not fished that bridge but typically fish the bridges here in Texas. I can't see why that bridge would not hold crappie.
Good luck fishing Beaver. The bi-catch is nice up there as well with Walleyes, Smallmouth and a Generous 10 a day largemouth limit.
Here's tip: Fish some of the streams and rivers. Scenery is awesome and you can fish all day and never see a soul. Even my pretty wife can catch em.
The rivers up there are full of Goggle eyes better known as Kings River Crappie. It's a fine eating fish.
PM me if you want tips on fishing the streams and rivers. I have decades of experience on those waters.