whats the andvantages and disavantages to a rattle jig would it produce more fish in stain water

Strictly personal preference  

alot on here dont believe rattles help but i think they can. then again, they might spook the fish in certain conditions.

i only use rattles in water i can only see about 8 inches or less into, with a big black jig and trailer.

a good time to test it for yourself would be when they are not hitting your regular jig.

Most of the time I dont use rattles but I have had a few days where if you didnt have a rattle on your jig you had a tough time getting bit.  

If the water is stained or muddy I use a rattle, If it is heavy wood cover I use a rattle.  Otherwise in Crystal clear water which I fish 80% of the time its a no rattle rule for me.  

I fish jigs in crystal clear water in a lot of heavy cover, mostly Milfoil and Hydrilla. My personal take on rattles is the rattle imitates the clicking sound of the pincers on a crawfish. In thick cover I drop the jig with a craw trailer to the bottom and shake it to get the rattles clicking. I feel it is like ringing a dinner bell for the Bass.

When fishing rocks in clear water I use a smaller rattle that clicks as I crawl the jig with a pork and/or plastic trailer over the rocks.

If I am not getting bites in area I am sure there are Bass then I will remove the rattles and see what happens. Rarely does it make a difference, but I have learned over a lot of years to keep an open mind.

About the only jigs I do not use a rattle on are small ball heads or football heads when using a double tail as a trailer. I fish these in shallow clear water and feel it is more of a reaction strike and the rattle is not needed.

I rarely fish stained water, but in that situation I would go with a double barrel rattle and a larger profile jig and trailer.