If you're just starting out trolling and having some slow days, one recommendation would be to downsize your trolling lures a little. The idea is to run smaller baits in the 5" to 7" range to increase your chances of getting bit.
Check out tsutomulures.com for our line of 7" trolling lures and sign up for the mailing list to find out when the 5" are available.
Lure in Video - https://tsutomulures.com/collections/medium-tackle/products/darth-vader-pau-hana-bullet-invert
https://www.youtube.com/channel/UC0x4aKj_ou0LgeFF8Gll_HA/store