Is the Ceiling Hook Too Small?Updated a year ago

Is the ceiling hook safe to use since only two screws fit into the wooden ceiling joist? 

This is a common question as most joists are 2x4 and only fit 2 screws. The other two screws can either be left out, or you can use anchors and install them into the sheetrock. The swing will still hold up to our recommended 200-pound limit.