After conducting online research, it appears that the Highway 68 boat ramp in Cedar Bluff, Alabama is a public boat ramp that provides access to Weiss Lake. The ramp is said to be approximately 24 feet wide, making it suitable for larger watercraft such as boats and pontoons.

According to the Alabama Department of Conservation and Natural Resources, Weiss Lake is a reservoir located on the Coosa River in northeastern Alabama. The lake is primarily used for recreational activities such as fishing, boating, and swimming.

As for the types of watercraft permitted on Weiss Lake, it appears that there are no restrictions on the type of boat that can be launched from the Highway 68 boat ramp. However, it is important to note that all boaters must comply with Alabama state boating laws and regulations.

Overall, it seems that the Highway 68 boat ramp in Cedar Bluff, Alabama is a popular destination for boaters and anglers looking to explore Weiss Lake.