I have fished the Croix the last few years, but never made it out for opener. Excited for this year, will it be a crap show out there?

Probably a dumb question, but thought I would ask. Last year was my first year with my 17′ Smokercraft and a Yamaha 115 SHO. I ended up lead coring alot for walleyes, had some good success. But with that motor I could sometimes get to 2.0 (right wind), but mostly 2.3 – 2.5. I am thinking of getting this product, watching install seems super easy.

So you just pop it into gear (idle speed), and then start using up/down arrows to control RPM’s? Seems pretty straight forward. For those that got it to work, how much speed could you knock off?