Check the evidence
A good tour distinguishes a verified production location from a plausible viewpoint and explains when a site is private.
Ask before booking
Confirm route length, gradients, toilets, rest stops, group size, cancellation terms and whether a boat segment depends on the tide.
Self-guided alternative
A central Looe loop can connect public views of the Guildhall, harbour, bridge and Banjo Pier. Use current local maps and avoid presenting private premises as sets.
Check before you go
No stale certainty: transport, parking, access, opening and weather change. A useful guide tells you where to check—not just what was true once.