Which preposition to use with trickiness

in Occurrences 1%

It is the same old sea that it was in Columbus' time, without any loss of trickiness in bumping small craft against towering sides.

of Occurrences 1%

Thus we all think that woman's whole existence is, and is only capable of, love, because a poet, in the trickiness of his trade, once said so.

Which preposition to use with  trickiness