28 December - Solution for the last clue and the next cryptic crossword clue

Wrecking boats at sea over long period of time (8)
Solution – sabotage

A bit of a tricky one today.  There are 2 words in the clue that hint at an anagram – wrecking and at sea.

Wrecking = sabotage

Boats at sea = an anagram of "boats" ie sabot

Over long period of time means that "sabot" is put over "age" which can mean a long period of time.

Today’s cryptic crossword clue – solution tomorrow

Unorthodox place for nuns in harmony by a lake (14)
Source of clue – NZ Herald

Hint – the solution ends in L