Go Deep
The big bass tend to rest during the day at a depth of at least 20 feet in deep lakes like Marsh Creek Lake. The far end of the lake near the dam has a depth of around 60 feet and bass can usually be found there during the heat of the day. Drop your lure down and work the area from the shoreline and out about 200 yards where the bass will go during the day for the cooler temperatures.
Choose Your Lure
Jig and Pig
The recommended lures for big bass are the always popular Texas or Carolina rigged worms (10 to 14 inches in length), and deep-diving crankbaits which look like bait fish, and spinner baits which attract the big bass in the deep water. There are several others such as the topwater plugs and the jig and pigs which look like craw fish in the water. Bright colors are also important, especially when the water is not real clear such as Marsh Creek lake's water. Don't forget to make sure you are using the right weighted line for big bass or you will lose your lure.
Go Fishing
Fishing at Marsh Creek State Park
This means getting a spot whether anchored by boat or sitting on land and get your lure down in the water. You will need to be quiet. Do not bang the boat or talk loudly, just wait. It takes time to lure the big bass and for him to decide if he is hungry enough to go after your lure. Make sure you are wearing sunscreen and have plenty to drink as the heat can be quite oppressive during the hot summer weeks of late July and August at Marsh Creek.