Has anybody else had trouble with the newer Fishin' buddy depthfinders from bottomline? I had an old Fishin' buddy II that I used with my pontoon boat and Super Fat cat for years and years, and loved it. It finally died and I replaced it with a Fishin' Buddy 4400. The second time I used it, about 3 hours after I started fishing, it would make a high-pitched noise, then the screen would go blank. I would turn it off, then turn it back on again and it would work for anywhere between 30 seconds to five minutes, then do the same thing. This was on a cool day with 100% cloud cover in late March. I tried it on my next trip to a lake, same story. I sent it back to Bottomline to have it fixed. They sent it back 4 months later, supposedly fixed, but it did the same thing. I sent it back to Bottomline and insisted on receiving a new unit. they sent me a new 4400 and it initially worked, but it malfunctioned in the same way the fourth time I used it. It will work for 10 seconds to 2-3 minutes, enough time for me to check a depth, then malfunction again. I bought a Fishin' Buddy 2202 to replace it. It stays on, but won't give an accurate depth. It says the lake is 4 feet deep when I am over 30 feet of water. whe I turn Surface Clutter Control (SCC) on, it will say the lake is 10-12 feet deep in 30 feet of water. I have adjusted the gain and tried everything I can think of, and have reset it to the original parameters numerous times, and still can't get it to function properly. Am I the only one having trouble with these newer units? Does anybody have a recommendation for a different type of unit for use on a float tube/pontoon boat? I like knowing the depth for chironomid fishing, and use it to pinpoint dropoffs, submerged islands, etc. It also gives you a general idea of whether or not there are any fish in the area.