How to fish from boat (newbie question)

Hi all,

I am planning a boat trip along the caley canal in scotland,
which crosses several lochs, where I suspect there might be some fish
(not many, but probably some), and a fishing licence is a trivial
extra on the boat hire tariff.

Only thing is, I have never fished off a boat before, and have no
idea how one would go about it. Would I need to drop anchor and
swing, or can you just kinda drift if you post lookouts to watch out
for other traffic ?

Any advice/suggestions/etc greatly appreciated

'-)

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