On the match-fished waters, a wobbled dead takes some beating. It's just like the dozens of disoriented or injured fish you see swimming around after every match, that the maggot drowners have kindly pre-baited for you with. On the pits I lay on with a light sliding waggler float set slightly over-depth and a couple of swan shot on the trace to tighten up to, for instant indication. The area to aim for is either on the slope of the marginal drop off or near the base of it. Weedbeds and overhanging trees which give cover are also worth a shot.
Disturbance is definitely an issue.
Fishing close won't work if you make too much racket or there are people clumping up and down the bank all day asking if you've caught any. Where you can, it makes sense to sit down the bank from any fancied spot like a hole in a weedbed or an overhanging tree. Plop the bait in with a gentle underarm flick and quietly creep back to your pitch. Another word of warning. At this time of the year the margins are where you find a lot of the weeds on many waters, not to mention a lot of the other tackle snagging junk that finds its way in.