DK Pick6, underdog, and prizepicks are probably not beatable without the boosts - at least DK now with the payout changes the rake is something like 40%
Luckily underdog and DK have profit boosts damn near everyday
DK P6 boosts are usually either 30% or 50%, max bet of $100
Underdog the max bet on their boosts can be a grand or two
The payouts on DK P6 can be massive though, as it’s paramutual. Everywhere else the payouts are fixed.