I get a kick out of how many little tricks setters can hide behind a simple phrase like 'catch sight of'. In my experience the most common solutions are short and punchy: 'ESPY' (4), 'SEE' (3), 'SPOT' (4) and the slightly more old‑fashioned 'DESCRY' (6). Setters lean on these because each one has neat cryptic hooks — homophones, double definitions, hidden words, and even &lit or cryptic definition surfaces that let the clue read like natural English. Once you know the usual suspects, you start spotting pattern matches in clue wordplay much faster.
If you want practical hints to look for, think in terms of device classes. A straightforward double definition is super common: something like "Spot: catch sight of or blemish (4)" works because 'spot' can mean both to see and to stain. Homophone tricks are lovely for 'see' — a clue that winks with a question mark and mentions the sea or water often yields SEE (sounds like 'sea'). Hidden indicators like 'in', 'among', 'inside' or casual surface phrases such as 'in the crowd' can hide answers across word boundaries, so always scan contiguous letters if the enumeration fits.
Then there's the vocabulary angle: 'ESPY' and 'DESCRY' appear a lot, and each invites different wordplay. 'ESPY' might be clued with a jokey surface about espionage or spying, or simply as the definition and tucked into a cryptic charade. 'DESCRY' can be clued via literal components ('de-' prefix plus 'scry' vibes) or by a more elegant surface that suggests making out or discerning something at a distance. Other variants like 'GLIMPSE' (7) or 'NOTICE' (6) show up when setters want a longer entry — those often come with container or anagram constructions.
My favorite solving tip: look at punctuation and tense. A question mark often signals a pun or homophone; a conversational surface often hides a hidden word with 'in' or 'among'; and if the clue reads like a natural phrase, consider a double definition. When you get used to these rhythms, 'catch sight of' clues become instantly recognizable and even fun to parse — I still grin when I spot a clever misdirection that leads to 'espy'.