LED Corn Lights are a good alternative to replacing the High Bay or other fixture like a Wall Pack.
The most common application of the LED Corn light is to simply mount the LED Corn Light where the bulb is normally screwed in. If you have a ballast in the fixture you will need to bypass the ballast in order for the corn light to work properly.
There are Ballast Compatible Cornlights available but they are limited to electronic ballasts and you would need to check the exact ballast to ensure compatibility.
LED Corn Lights