Beaver Dam Black Hole Cover: Prevent Freeze-Ups & Keep Light Out

Keep your ice fishing holes open, slush-free, and performing at their peak with the Beaver Dam Black Hole Cover (P/N BD-C B ). Engineered specifically for hard-water anglers who want to maximize their time on the ice, this heavy-duty insulated hole cover acts as a protective shield over your fishing holes. By trapping natural geothermal heat rising from below the ice and insulating against biting arctic winds, it drastically reduces ice formation—saving you from constantly skimming slush and re-drilling frozen holes.

The dark black design naturally absorbs ambient sunlight to further resist skimming while blocking bright surface light from shining down into the water. This light barrier prevents spooking sensitive, shallow-water gamefish like trophy walleye, crappie, and pike, creating a natural, undisturbed strike zone beneath your tip-up or rod setup.

Key Features

• Thermal Freeze Prevention: Effectively insulates drilled holes to prevent skim ice from forming in sub-zero conditions, reducing maintenance and keeping your line moving freely.

• Light-Blocking Stealth Design: The deep black material prevents surface glare and sunbeams from penetrating the water, keeping spooky gamefish calm and confident in shallow or clear water.

• Rugged Extreme-Weather Build: Manufactured from durable, cold-weather flexible material that will not crack, break, or warp when exposed to severe freezing temperatures.

• Universal Hole Compatibility: Sized to fit neatly over standard ice auger holes, making it an ideal companion for tip-ups, deadsticks, and active jigging holes alike.

• Snag-Free Line Slit: Designed with an easy-access center notch so you can place or remove the cover around your line without disrupting your rig or setting off delicate triggers.

Technical Specifications

Pro Tip: Before placing your hole cover over a freshly drilled hole, scoop out the top layer of loose slush, then heap a generous ring of light snow around the outer edge of the cover. Pack it down gently to seal out wind drafts completely. This creates an airtight thermal seal that keeps the hole completely ice-free, even through overnight sets in single-digit temperatures.