Snow_Dog wrote on Feb 10^th, 2011 at 1:03am:

DentonDoc wrote on Feb 10th, 2011 at 12:10am: I just went to Radio Shack and got a 8-pack battery holder for AA's and a 9-volt clip on adapter, wired it up to the battery leads and viola. dd x2 There's no reason to ever carry lantern batteries in the bush anymore.  Just be sure you buy a regular depthfinder, not one marketed as portable.

Get two of the 8 pak battery holders, put your backup batteries in the backup holder. Tape all batteries in their holders with a few wraps of electrical tape. Then, when your initial set dies after about 5-6 days of heavy use, it's a simple matter to swap the whole set. Quick & easy.

PB, yes, you will catch more & bigger waldos if you are fishing where they hang out. I don't actually 'mark' waldos hanging on the bottom, but I can read the structure to determine where they are if they are home. I do see suspended fish which can serve as an indicator. ;)