If only there was some strong rubber hose somewhere, on a dive boat.......
Lol.
Implementing and understanding and being trained in the application and use of a tourniquet is the key. As long as you are trained and understand that application, then even a "do rag" or shoe lace and a stick can be as effective.....or more.....than an Amazon approved tourniquet. The key is to fully understand and implement the "concept" and purpose of a tourniquet.
I strongly disagree with both of the above. The answer for extremity arterial bleeding is a purpose built tourniquet.
Rubber hose? No thanks. Shoe lace or dew rag? No thanks. Prior research and experience demonstrates that improvised tourniquets are less effective and potentially more damage.
Bleeding Control Basic Training Among Laypeople Applying Different Tourniquet Types
This crossover randomized clinical trial assesses whether participants completing the American College of Surgeons Bleeding Control Basic training with Combat Application Tourniquets can effectively apply bleeding control principles using other tourniquet types.
jamanetwork.com