The key is your last question.....and the answer is yes.

25% of flops seen is very high to me. The idea being if you don't play a hand it doesn't cost you anything. If you limp in and don't hit the flop.....don't bet it and it didn't cost you anything. Wait until you do hit something.

As for raising premium hands big......I generally limp alot of good hands so I can see a cheap flop. If I hit then great I bet. If I don't then I'm outta there.

Now when you're talking primo hands.....like JJ/QQ/KK/AA/AK I raise them 99 % of the time but you have to make sure your raise doesn't drive them all out. Try raising 4-6X the big blind and that should get you some action in terms of callers but not too much. You also have to consider your position when raising with a monster starting hand. If I am one of the first to act my raise may only be 4 X the big blind but if I am in late position with lots of limpers I may raise it to 6X BB or even higher.

Also if I have AK or KK or AA for example and most of the table folds out before it comes to me with only 1 limper and 1 or 2 left then i may just limp in or just raise the minimum raise in the hopes I will get 1 or 2 to see the flop with me so I can get some money out of the hand.

I dunno if this will help you but try to give it a shot because I'm doing fairly well with it. The biggest thing I want to stress to you is regardless how good your starting hand is.....if you don't hit anything that don't stick around to bet hoping your card will come on the turn or river because most of the time it won't.