Based on the available information, the boat ramp named Hilbert Lake is located at latitude 45.7126503 and longitude -88.42829132 in Wisconsin. This boat ramp provides access to Hilbert Lake, a small freshwater lake located in northeastern Wisconsin.

The kind of boat ramp that is present at Hilbert Lake is not specified in the available information. However, it can be assumed that this boat ramp is a standard concrete ramp that allows boats to be launched and retrieved from the lake. The width of the boat ramp is also not specified, but it can be assumed that it is wide enough to accommodate most boats.

As for the types of craft that are permitted on Hilbert Lake, it is not specified. But, it is generally assumed that small boats such as canoes, kayaks, and fishing boats are allowed on the lake. Additionally, motorboats that adhere to certain size and horsepower restrictions may also be permitted.

It is important to note that the available information may not be the latest, and it is always advisable to verify with local authorities before launching a boat on Hilbert Lake.