I know before I ask about dive charts you will tell me to get the Precision Trolling App on my cell phone or I- pad, that's not happening. I do not have a modern cell phone or ipad so this doesn't help people like me. I have purchased their books in the past. My question where does a person go for help? Most lures, divers or floaters usually have a max. depth shown on the package, is this depth with 10# line for a 100 feet, or what is it? Do floaters of the same length and weight like the P10 or Bandit Shallow dive have the same specs? I would really like to find out more but it seems the industry isn't worried about a few old timers. Any help is deeply appreciated. Thanks