dsaavedra, I feel your pain as I am also failing to make a swimbait run right without a lip.    I have look at every bait made and can't figure out what the trick is.   I know it has something to do with a long weighted head section but from there I'm lost.

I think on my next try I will cut a 45-50 degree slop on top of the baits head and see how that works.    

The lip will give you bait all the action you want.

my first lipless swimbait  ran great, but this one, not so much.

IMO, the head isnt as important as the joints (in creating action). when the water flows over the joints, vorticies cause it to swing the joint one way and then the flowing water pushes it back the other way. and the cycle continues.

also, i dont think i have seen too many lipless swimbaits that only have 2 pieces. most of them have 3 or more.

my hypothesis on why this one didnt swim is that i over-weighted the bait. i think i put too much weight in each section, making them too heavy to swing freely. on my next one, i am gonna put just enough weight to keep the bait sitting upright.

We will just have to agree to disagree on what makes them swim.   There is always more than 1 way to build a crank that runs true.