After conducting a search, I was not able to find any specific information about a boat ramp named Hill County in Texas with the provided coordinates. It is possible that the name or coordinates are incorrect.

However, to provide some general information about boat ramps in Texas:
- Boat ramps can vary in size and design, from small fishing access points to large concrete ramps with multiple lanes.
- The width of a boat ramp will depend on the specific design and intended use.
- The body of water that a boat ramp services can also vary, from small lakes and ponds to large rivers or coastal areas.
- The types of watercraft permitted on a body of water will depend on local regulations and guidelines, which can vary by location and season.

It is important to note that boaters should always research and follow local regulations and guidelines when using a boat ramp and operating a watercraft. Safety should always be a top priority.