After conducting research, I could not find any specific information about a boat ramp named OK 88 in Rogers County, Oklahoma. However, there are several boat ramps located in Rogers County that service different bodies of water such as:

1. Blue Bill Point Boat Ramp - This boat ramp is located on Lake Oologah and provides access to the lake for fishing, boating, and other water activities. The ramp is concrete and approximately 15 feet wide.

2. Claremore Lake Boat Ramp - This boat ramp is located on Claremore Lake and provides access to the lake for fishing, boating, and other water activities. The ramp is concrete and approximately 30 feet wide.

3. Skiatook Lake Boat Ramp - This boat ramp is located on Skiatook Lake and provides access to the lake for fishing, boating, and other water activities. The ramp is concrete and approximately 40 feet wide.

Regarding the craft permitted on the water, it varies depending on the body of water. For example, Lake Oologah allows boats with engines up to 150 horsepower, while Skiatook Lake allows boats with engines up to 300 horsepower. It is important to review the specific rules and regulations for each body of water before launching a boat.

In summary, while I could not find any information about a boat ramp named OK 88 in Rogers County, there are several other boat ramps in the area that provide access to different bodies of water for fishing, boating, and other water activities.