im planing a 2x600w ebb and flow table and a light mover for it,can somebody tell me what would be a perfest size table for a setup like that im thinking 2.2m x 1.2 thats about 2.6m2,how much more coverage can i get from my lights with a light mover

General rule of thumb as I've heard is that you can increase normal coverage by about 25% with a mover and see benefit (assuming its set up intelligently..
That light for your quoted area would be sweet.. Roughly 460W/m^2.. (For Americans thats about 7'x4' and about 42W/sqft)..
Thing is a light mover is absolutely unnecessary in that area with two 600W lights.. Your table would be less than twice as long as it is wide, so if anything you'd get more coverage moving them along the 4' length, not the typical up and down the table length motion..
A light mover with a single 1000W on that table would be more appropriate, though not nearly as good as two 600W lights..
How much space do you have to work with?? I'd be thinking 1.0mx2.7m (or even longer).. That would give you 445W/m^2, likely equal in value to 500W/m^2 stationary above that table due to the 25% advantage..
For the record, I used to pull about 2kg crops from a nearly identical table to what you suggested with 3 400W lights above.. Very similar to your plan..

i cant make the table longer couse this is the perfect size to fit in my space,the plan is to have each 600w covering 1m2 when stationary and an aditional 0.3m2 thats 30% more making it move for 30cm to the side and back,is this ok or should i change my plans to make it more efficient,thanks for the reply,and can u tell me how did u get such a high yeild with 1200w,with how many plants did u go and what strain,is that with co2

I'd save your money and forget the movers.. They're only really useful when you don't have the ideal lights for your space layout.. Yours are ideal for that table..

I've read that they are NOT to increase the area, but to maximize it. aka: better penetration, grabbing the corner, etc. So if you have a 400W, and that is supposed to cover a 2x2, then with a light mover it can cover a 2x2 but better.

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so what kind of a increase in g per watt can i expect from a light mover if any

i thought a 600w covers 1m2 idealy so thats why i plan on making these tables 2.6m2 for 2 600w,thats 30% more per light,correct me if im wrong