I think Marcum needs to look at this technology, I could only dream of their software and sonar running on an iPad! They could link it with the GPS and mapping software, the possibilities are endless. Scroll down for the video.
http://www.engadget.com/2012/06/15/insert-coin-deeper-sonar-fishfinder/
It is completely do-able if you’re willing to tolerate signal to display lag times. Will we see it in the future? Likely. But right now the brightest minds in sonar aren’t finding obvious solutions for overcoming the hurdles and ice anglers aren’t likely to be willing to fish with anything that would show significant/noticeable delays.
I’m sure they’ll keep working on it though. 
That would be awesome from Marcum
Food for thought. I can remotely locate my smartphone if I misplace it (or stolen). I can lock it down so nobody could use it. Make it scream an alert sound… and so on. That would be cool technology in a fish locator. It could also possibly help in search and rescue (ice fisherman). I don’t own modern equipment. Maybe they already have this stuff..?.
Yes, this looks really cool, but is everything that looks cool practical or useful? You look at the life of batteries for an iPhone or iPad normally without the use in a subzero environment and you have problems. Then you also look at the fact that you need to keep track of 2 separate items now to make this work. As of now you set this on the ice, you turn it on and it works and stays where you want it. With a remote unit, you have to either hold onto the display unit or set it somewhere where it won’t fall into the hole. IF the battery goes dead so is your fishing experience. This is definitely a case of; sure you can go there but should we really! Just my 2 cents worth.
I agree with you, I cant even get my phone to last for 5 hours on the lake when im not even using it. But its a pretty cool piece of new technology and with time everything will improve and be more practical.
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It is completely do-able if you’re willing to tolerate signal to display lag times. Will we see it in the future? Likely. But right now the brightest minds in sonar aren’t finding obvious solutions for overcoming the hurdles and ice anglers aren’t likely to be willing to fish with anything that would show significant/noticeable delays.
I’m sure they’ll keep working on it though.
I agree the current application isn’t quite there, but what I would love would be to separate the hardware and the software. I would love to use the new high resolution displays that are MUCH cheaper than what we find in our fish finders (likely due to economies of scale) and use the marcum/HB/Lowrance software. Plugs and cords are OK, but let me use my off the shelf tablet, and a standard transducer.
I get that the units of today are water proof and more durable, but there isn’t a good technical reason not to do this. I am sure a profitable business model would emerge. But probably not with the margins todays fishing electronics makers enjoy.
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Food for thought. I can remotely locate my smartphone if I misplace it (or stolen). I can lock it down so nobody could use it. Make it scream an alert sound… and so on. That would be cool technology in a fish locator. It could also possibly help in search and rescue (ice fisherman). I don’t own modern equipment. Maybe they already have this stuff..?.
I don’t like this idea at all, I can see the wives constantly pushing the get home now button. That would be irritating enough to let the thing slip down the hole. Some ideas are just better off dying. 
I took a shot at trying to find a transducer that I could plug into my micro USB port and try and program something on Android. I gave up. But I know that Android has an interface for external devices.
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