Holecarding on Crazy 4 Poker?

I recently stumbled onto a holecarding opportunity when playing Crazy 4 Poker, and was able to catch a glimpse of a card in the dealer's stack almost every time.

I know that seeing a holecard can be powerful in 3 Card Poker, but in C4P the dealer makes a 4 card hand out of 5 cards total, so I would imagine that the effect would be much diminished. However, it seems that it would still give some advantage in certain situations - such as not playing a King high hand if you know that the dealer has an Ace.

Any ideas on the effect of seeing a downcard in this game?

Not enough, unfortunately.

Bad game, absent an extraordinary situation.

Of course, most dealers deal more than one table game...