Sometimes that's all it takes is dropping down 40-50ft over 100ft. All depends on the conditions. Some days you gotta go deeper, some days shallower. Some days it's all dipsy rips, some days they're all off the rigger. My biggest Lake O salmon (From a boat) came in August off PC. I let out about 100ft of line and was just setting the line in the release off the rigger when the fish ripped the line out of my hand. That lure was maybe 1-2ft down at most You just never know. And with the hardware we've got these days it's easy to fish down 150ft or even deeper without too many headaches. Not something I do, but a lot of guys swear by it.