Feel dirty by asking... Generic MPPT solar CCs?

BFL, my question was so old that I might not remember it myself. I think it was - whether a semi-fixed tilt makes sense for a panel pointing not S (obviously it makes sense then), but to SE or SW. Assuming, for simplicity, that there is no specific morning/afternoon clouds pattern. Many roof installations allow only one-axle tilt (if any), so people would like to know whether it's worth climbing the roof when they are not parked strictly S/N.