Is there any way to further reduce variance besides playing 2 hands for aprox. 3/4 the standard one hand bet only after wonging in ( ko-4 ) ?

I am unable to find local game any better than 6d das rsa 75 pen. mostly $ 15 & $25 min, occasional $ 10 min.

I am thinking about not splitting or not doubling on some marginal hands, hopefully this will lower variance and provide some cover?