didnt know it was a "technique" i guess, rather something that just happens when you have melting ice and snow. Ive always done well when its happening but i think its more time of year (lakes get a charge of fresh oxygenated water etc.)
Another secret technique on the ice belt is toting a trolling motor with an extra long shaft and inserting it into a hole and turning it on 50%. You then drill another hole right in the prop wash and put down a bottom bouncer and a spinner. It's called the Aspnhinctersayswhat Rig. Invented by Wayne and Garth Innovations.