Sven,
I am sorry if I took you wrong. I look forward to exchanging ideas with you in the future.
Anderson,
Your foamed filled rope is an interesting idea. I would be worry that it would get wrapped in the legs of the rig and stuck in the coral. More than once I have had to dive down and free the boat anchor rope from the legs, just because it got some slack in it and the coral grabbed it when it came in contact.
On the pressure increasing problem as the buoy goes to the surface is already solved via a pressure relief valve. It was one of the required features when I was looking for a inflatable buoy. What I am using was designed for this purpose. It's even called a “Spearfishing Buoy” by its manufacture. You can see it at
http://www.carterbag.com/spearfish.html. The only difference in mine is I asked Dave Carter to make it a little bigger. I believe the one the web page provides 30 lbs of lift and mine should do 50lbs.
Rigdvr,
Your statement, “I will guarantee you that your rig WILL NOT WORK on a 100 lb AJ” is exactly the kind of statement that I take offensive too. How do you know for certain it will not work? You haven’t even seen it yet. Are you God?
There is nothing wrong with having opinions; its when you think everyone has to believe as you do, is when things get out of hand. Unlike you, I believe it will work. Notice I prefaced my opinion with “I believe” thereby allowing for error on my part and to acknowledge that there are other people with other opinions that may also work.
My use of a broadhead speartip to increase the chance of stoning a fish and or at the least, weaking it sooner by severing major nerves and arteries, is like the inflatable buoy, is not an original idea. There is already a reputable spear gun manufacture producing these for the very same reasons I outline.
The characteristics of the broadhead fits well with the inflatable buoy. An inflatable buoy is not going to be a robust as a hard foam filled buoy. The advantage of the broadhead is more damage done to the fish which results is less fight. This fits well with a float system that only deploys if needed. If the float is needed, the time the fish is able to pull it through the water and objects should be lessen.
Sure there will be disadvantages to this system, but there are disadvantages to any system. It all boils down to which disadvantages are you willing to put up with. I personally like the freedom of knowing I can do where ever I want to without worrying about the path of a surface float above me. If the path of the surface float doesn’t bother someone and they like the security of knowing their float will not puncture and should always be there to keep you from losing their gun, or spear if it’s a breakaway system, then by all means, they should use hard surface float.
Thanks for hearing me out,
Don
PS I want to acknowledge Jay’s excellent though of putting a flopper behind the broadhead. I will probably give this idea a try, if I determine the percent of losing fish is too high.