SB timing chain drip tab

The basic slinger on the crank and the drilled through bolt does a good job most of the time.
So Idle the engine on a incline. The slinger isn't so saturated, idle rpm lessens the sling effect ( front sump versus rear sump may also be factor ), the drip runs down the face of the block behind the chain.
Do some conditions create need for something more ? How about a drip leg from that hole ?
Was it marine applications that presented this condition to the engineers ? More questions than answers LOL