Ok I will practise in a small 1 hectar man made lake.The water is stained and the structure is lily pads.I already have a popper with green on top and red-orange on bottom, a chartreus buzzbait and a couple of  chartreuse-pepper plastic worms.What do you recommend?

try a weed-less frog near/over the lilly pads

Any topwater can work over pads as long as it doesn't catch on the vegetation. Various soft plastics are good, fished over, around and through the pads, letting them sink into holes and at the edges. Also, spinnerbaits and crankbaits along the edges if you can get away with them.

Yeah I'd definetly try either a topwater hollow weedless frog or a soft plastic frog such as a Stanley Ribbit or a Zoom Horny Toad fished in/around the pads.

I'd also try throwing a jig into those pads and working it nice and slow slithering it through the pads and then pausing it, and just work it through those pads nice and slow. I'd go with a greenpumkin, or a watermelon red color. (Yum Chunk/Zoom Super Chunk, or Netbait Paca Chunk are all good choices for trailers, match the size of the jig to the size of the trailer, and the color of the trailer to the color of the jig)

Another thing I'd try in those pads is pegging and flipping a Zoom Baby Brush Hog, or a Yum Wooly Hawgtail and just working it through the pads.

You can also try throwing senkos or spinnerbaits in the non-padded areas, and see if you can get a few fish on drop offs etc.

Oh ya almost forgot, try pegging a GYCB Kreature in greenpumpkin or watermelonred, or a Sweet Beaver and working that in those pads. I can usually always get a hit or 2 flipping a Gycb Kreature.

Get yourself a heavy rod and some braid.

My guess is that most of the ecosystem and plenty of bass will be in 5ft or less, and in the pads for most of the season.  

Weightless t-rig any softplastic.  4/0 or 5/0 ewg, with a hitchhiker cork screw or superglue.  If the nose of the bait keeps catching on the pads that bait is going to be short lived and it's just a pain to keep fixing it.

Some of my favorites for in the pads are 6" senkos, 7" or 10" curly tail worms, swimming frogs, tubes.  I don't think it matters a whole lot.  Favorite colors, junebug w/ chart legs/tail, black w/blue, white, green pumpkin.

Make a lot of casts to any irregularities, points, pockets, drop offs.  The limited visibility means you're going to have to hit them right in the face or give them plenty of time to come check it out.  

On the edges I like jerk baits and spinnerbaits as search baits.  Buzzbaits and jitterbugs get a nod too.  

Man I love fishing in that crap, can't wait until the ice melts!