How do you make your marker buoy for blackfishing?

Adrift At Sea: Are You Prepared To Safely Dive Offshore

Marker buoys are still a thing

Fishing spot Marker Buoy Jugs

Make Your Own Marker Buoys - Union Sportsmen's Alliance

Make Your Own Marker Buoys - Union Sportsmen's Alliance

Ozark Trail 2-Pack Marker Buoy - Orange

VEVOR Boat Buoy Ball, 21in Diameter Inflatable Heavy-Duty Marine

DAN 4' Delayed Surface Marker Buoy – DAN-STORE

DIY marker buoy - All Other Gear - Spearfishing World forum

DIY marker buoy - All Other Gear - Spearfishing World forum

DIY Marker Float - with Dollar Store Marker Buoy Light

Cherry Bomb The Automatic Adjusting Marker Buoy

Pecihiko Surface Marker Buoy, 4ft Scuba Diving