Spearguns, other than pneumatic spearguns, are powered with speargun rubber (also known as power bands). The rubber is pulled back and hooked into the notch of a spear by the bridle on the rubber.
Speargun rubber comes in different thicknesses (e.g. with an outside diameter of 13 mm, 16 mm, 18 mm, 20 mm etc.) and lengths (to suit the target "gun length" being the distance between the inside of the gun muzzle to the front of the trigger). We have top quality bulk rubber, which is normally cut to size, and you make up the speargun rubber. We also have pre-made circular and euro rubbers for some spearguns. For hand spears we carry pre-made rubbers as they tend to be all the same length.
You can buy lengths of speargun rubbers that you can then use to cut and fit your own power bands. This is suitable for experienced spearfishermen who have time to spend measuring and cutting their rubbers. However if you are a beginner you will be much better off buying pre-cut rubbers designed specifically for your speargun. This ensures you have the right length rubbers for your gun and that they are made from the most effective materials.
The thicker your speargun rubber is the harder it will be to load and the more power it will give. Alternatively, you could have two thinner rubbers that are easy to load but still provide maximum power. Twin 16 mm rubbers are ideal for most kinds of spearfishing unless you are hunting marlin or large tuna which may require several power bands.
As with any rubber product you need to store speargun power bands away from direct sunlight and extremes of heat. Store in a dry, dark place and spray with silicone lube before putting them away to keep them supple.
PADI Peak Performance Buoyancy
Excellent buoyancy control is what defines skilled scuba divers. You've seen them underwater. They glide effortlessly, use less air and ascend, descend or hover almost as if by thought. They more easily observe aquatic life without disturbing their surroundings. You can achieve this, too. The PADI Peak Performance Buoyancy Specialty course improves the buoyancy skills you learned as a new diver and elevates them to the next level.
What You'll Learn
While working on moving more efficiently through the water, you'll also learn how to:
- Determine the exact weight you need, so you're not too light or too heavy.
- Trim your weight system and scuba gear so you're perfectly balanced in the water.
- Streamline to save energy, use air more efficiently.
- Hover effortlessly in any position.
Prerequisites and Requirements
16 years or older
PADI Open Water Diver certification, or proof of entry-level diver certification from another training organisation
Approximately 4 hours
It's best to use your own scuba equipment, including a weight system, so that you fine-tune your buoyancy in gear you'll use on every dive. Your PADI Instructor can help you find the equipment that is best for you and your diving adventures.
Personal Equipment — You'll need to provide your own bathing suit and towel. For your personal hygiene and comfort, there are some things that we simply choose not to provide you with, and this is more out of concern for your health and well-being than anything else. These include:
- Snorkel — Risk of orally transmitted diseases
- Mask — To prevent masks fogging, divers spit in their masks. Would you like to put on your face something that someone else has recently spat in?
- Gloves — Dermatitis
- Dive Boots — Tinea is a nasty fungal bug that loves to jump from one person to another
- Fins — Complete your own snorkelling kit
If you don't already have them, you can buy these items in our dive shop online or in-store. Our experienced dive shop staff can help you with the right equipment choices.
Rental Equipment — Rental gear is not included in the price. The Scuba Doctor has high-quality BCDs, Regulators with Dive Computers, Scuba Cylinders, Wetsuits and Weight Belts available for hire. See Scuba Equipment Rental for details.