Sentence improvement — infinitive stacking after a catenative: prefer 'It will be no good to try to find an excuse next time' ('to try to find'), not gerund stacking.

Given sentence
It will be no good trying to find an excuse next time.

Concept/Approach
After evaluative phrases like 'It'll be no good …', English can take either a gerund ('trying') or an infinitive ('to try'). The most idiomatic, clear alternative here—especially for formal tests—is the full infinitive chain to try to find.

Option analysis
• to try to find → neat and idiomatic catenation.• 'to try finding' → acceptable but less common with 'no good' and breaks symmetry.• 'trying finding' → ungrammatical double -ing.• 'No improvement' → keeps a less preferred exam-style form.

Final Answer
to try to find