i all ways place hitches at swells, imperfections etc. or make small humboldt to dawg hitch into.
But furthermore; i think clove, running bowline etc. are best on pulls perpendicular to the host mount/ spar. This then places the Standing Part pull to one side of the spar, and the bight around the opposite side of the spar is then inline with the pull of the Standing Part properly. To do this with a rigged load hanging on a line; the load would then have to be perfectly balanced(horizontal). Taking same lacing strategy to a mount spar that lays inline with the Standing Part(like most hanging loads would do); then places the locking bight on the opposite side of the spar perpendicular/leveaged to the Standing Part's pull improperly. This is why ABoK/knotting bible places pulls inline and perpendicular to spar in 2 separate chapters, back to back.
When coming to an inline pull on a host spar, we should precede the Clove, running bowline etc. with a marl or half hitch. This then becomes the primary hold; but the leg of line coming out of the marl/half hitch (to the clove, running bowline etc.) stands properly inline with the Standing Part's pull; and is therefore not leveraged. Note; if hanging a load in such fashion; both primary and secondary should be before the initiating force of the CG.
Also, this gives 2 grab points on the load.
A clove is an important knot to know; as 'snuggle' and constrictor hitches etc. are formed from it.