Thats more like it Nick , i think you have hit the nail on the head there .
Angling pressure , as it subsides , and maybe not even mondays maybe as late as tuesday/wednesday may well be when the fish decide the baits are safe .
By which time of course they are washed out .
A much more realistic explanation methinks
I would also tend to agree with Liam. Not because it 'could' be a factor but lots of things can affect whether feed fish and trip up.
Stephen mentions fishing Monday/Tuesday after a weekend. Bites may dry up over the weekend due to pressure not the bait being used and they feel happier feeding when there is less bank side commotion. It could be big beds put them off for a while. Who really knows there are a lot of factors at play.
If it's trying to capitalise on weekend syndrome you might have more success roaming looking for signs of feeding fish and putting a single bait, stringer or stick to them. Walk round on the weekend and see whether you can see where big beds are going out so you know where they may be feeding. Maybe fish a washed out bait against a new one to see whether there is a difference if you really want to test it. There are no wonder rigs or bait and the only thing you can guarantee is that you can't catch what's not in front of you. Maybe even more so if you've washed out a lot of the attractants.