Pointing a touch further north than Bohonagh, in terms of declination, with a measurement of 1.22 degrees*, Knocks North provides a cruder alignment to the equinoxes, further hindered by the tree growth on the horizon. On the other hand the local historian that has witnessed it mentioned the sparkling of the falling sun on the big splash of quartz on the axial stone. Worth a visit, I think.
Permission can be obtained from the farm to the south, on the left hand side of the road.
* Patrick and Freeman, 'Revised Surveys of Cork-Kerry Stone Circles', Archaeoastronomy, no.5 (JHA, xiv (1983)); S51: Knocks/A.