What this tool is: the book hands you "30% MORE WINNINGS" in a shiny wrapper — this unwraps it. The boosted effective odds, the extra dollars, and whether the boost turns the bet +EV at your true probability.
A profit boost multiplies WINNINGS, not stake: 30% on +100 makes it effectively +130; on -150 it makes roughly -115. Boosts shrink the hold — sometimes past zero — but only clear it when the boosted price beats truth. The play: devig the market for the true probability, put it in the box above, and let the EV cell speak. Longer odds gain more from the same percentage, which is why the books cap boost stakes on dogs.