PAUL N I don't fool with that, I just inserted one 4oz lead fishing weight in each of the four tie down holes so you don't have to drain water out.When done swimming I toss it in the car and take off. PS buy the ones that are solid lead that form a loop at the top. The loops fit very snug and can't fall out.

MATTHEW V I used my buoy for the first time on Saturday. I was in a bit of a rush to get out of the house so I just threw it in the car as I wasn't sure if my buddy would have his or not. At the dive site I realized I had not filled the bottom pouch with water. The whole buoy was deflated at that point. It only took a quick look at the bottom valve to realize it's not a one-way valve like the top chamber. I had a 20 oz. bottle of water with me and I was able to slowly pour that into the bottom chamber. I think it filled the chamber about 3/4 full. I wouldn't recommend that method, but it did work! I plan to buy a small funnel for the next time. I imagine the water could be left in the chamber for a while but I'm sure it will just get rancid and probably start to eat through the buoy so I decided to empty mine. And yes, the buoy performed really well for the entire dive!! I'm very happy with the purchase!

CHRIS M The water valve is very similar to the the oral inflation valve, only with a slightly larger hole. The center pouch Could be filled with air for a backup, I suppose. I would have to guess it could only fit enough air to barely keep the rest of the dead weight positively buoyant. If one were to do this, they would need a small weight attatched to the center eyelet to keep the float and flag upright. I could see this, less streamlined approach, become a 'hang up' issue if swimming through kelp or anything of the likes.

CHRIS M The water valve is very similar to the the oral inflation valve, only with a slightly larger hole. The center pouch Could be filled with air for a backup, I suppose. I would have to guess it could only fit enough air to barely keep the rest of the dead weight positively buoyant. If one were to do this, they would need a small weight attatched to the center eyelet to keep the float and flag upright. I could see this, less streamlined approach, become a 'hang up' issue if swimming through kelp or anything of the likes.

BARBARA L I pruchased this as a gift. I have forwarded your questions to my son-in-law. Hopefully, he can help you out.

ANTHONY M No the flag cannot be changed to a bigger one

DUSTIN Y Not that I can see. It is only about seven by seven inches. It works good for spearfishing in lakes and the buoy does a good job on twenty pound fish. However, I wish the flag was legal size. You could possibly glue a suction cup with a dowel in it to the flag to make a bigger one.

SCOTT G This is not my product however a great alternative is the Aquaspotter by goat gear. You can find it at leisure pro as well.

WAYNE S i don't think so

JOHN M I never measured the cord, but it is reasonably long, probably at least 20 feet. It can easily be made longer or shorter. It is in any case long enough for for my purposes: snorkeling and free diving to the bottom in water up to 15 feet deep. It is small, and cannot really be seen in rough water or by speeding boats. It is difficult to tow in the ocean with more than about 5 or 6 feet of lead line unless the surface is very calm. The attachment for a stabilizing weight works fairly well. The torpedo buoy is useful to hang small things from or attach items to if you don't always want to hold them in your hand while you are casually exploring shallow reefs. It is quite ruggedly made for its price. The little flags are worthless toys.

RAFAEL C Not sure about the exact size but it is very long. I had to cut mine for use.

BRIAN K The torpedo is roughly 30 inches long. The flag is fairly small (maybe 6-7 inches tall) but the bright orange float is quite visible from the boat. I have not had any trouble with it. Much better than my last dive flag. My last flag would get pulled under water with the slightest current but this flag filled with air stays on the surface even with moderately strong currents.

ANN M Its about 28 inches long and 8 inches in diameter. the flag is about 6x5 its a good deal for an inflatable dive float. however you need to add ballast to the bottom. there is a pouch thing down there that can hold just enough sand to be ballasted.

DUSTIN Y The flag is small. Only about 8 inches by 8 or so. The float is 2 ft long and I use it as my spearfishing buoy. It does well with thirty pound stripers.