SOLVED. Children's anthology book of monsters read around 1992. One story had a monster under a boat and another had a boy meeting a yeti. [s]

[MattP]

This was an anthology book of short stories about monsters. The one i particularly remember was about a boy named paul who meets the abominable snowman. The snowman is hungry so Paul gives him a chocolate mouse sweet he had in his dressing gown pocket at one point. Another story i believe had an overturned boat with a monster trapped underneath it.

[Becca]

Monster Stories by Jane Launchbury looks like a match

[MattP]

Yes that's it. Thank you so much