I find smaller lakes harder than bigger less pressured waters.
The fish tend to be more wary, more rig aware, even more bait aware, so getting ahead of both the fish and other anglers.
It is so much harder getting rigs that the fish aren't 'used to', although current fashions can make things a little easier if everyone is on spinner or Ronnie rigs, and you can come up with something different.
When I first went onto Brackens Pool I knew it was heavily pressured, and nobody used much bait due to the rules of no catapulting or throwing bait in, everything had to be attached to PVA. I came up with my sliding revolving ring presentation (an adaptation of something I had seen Rob Maylin write about), and used plenty of big stringers, 30 boilies at a time, and would put in as many as 20casts of stringers before my hookbait cast.
The first fish I caught was in a swim that was often ignored and was 30lb.