Anyone play 6:5 Blackjack with much success? I know the odds are worse than 3:2, so how does that effect basic strategy?

Never played but from what i’ve heard it doesnt affect BS, just really bad payout obv so expected return is less

can’t have much success with these rules..

The payout of 6:5 for a BlackJack as oppossed to the usual payout of 3:2 has NO effect whatsoever on Basic Strategy decisions.

You are only being short changed 1/2 of a betting unit if and when you receive a BlackJack.

I believe that the more important factor involved should be deck penetration - how deep into the pack is the placement of the cut card.

Generally, in shoe games of 6 or 8 decks - no more than 2 decks should be behind the cut card, and in a 4 deck game 1 deck cut-off would be considered ideal.

The deeper the cut card is placed,  the higher the potential advantage the player has - and vice versa for a cut card placement less than the above stated numbers.

Whether the dealer Hits or Stands on a soft 17 ( A6 ) will modify some basic strategy rules.

This is indeed a bad payout. You should always look for 3:2.