Connecting Decoys to minimize number of weights

I need to buy more weights to include more decoys (ducks and geese).
To reduce number of how many more weights to buy, i am looking to pair decoys.
This is in a still/very slow beaver created pond. Will be using PVC line.

To reduce decoys floating together (to keep space between the two) which method is preferred:
1. Have 28-36 inch of line connecting the pair, back of one and front of other.
2. Connect both to the same weight but different lengths of line.

Secondary question:
If i do start connecting decoys/geese back to front, i noticed some decoys have loops (holes) at the back top, at the end of tail.
Is there any advantage to connecting to upper tail hole rather than the hole at back end of Keel?
I am guessing it is to help with decoy movement in moving water. However i will be in still water unless is windy.

WOW!! This thread has the potential to be like asking "What's the best shotgun to buy?" I've never had any luck stringing decoys together,just ending up with a tangled mess. You mention that you'll be hunting a small(ish) beaver pond. I'm thinking using a random placement would work better in a small area as opposed to a large spread on big water. Just IMHO,it would look a lot more natural.

Would 1 line with multiple clips work? Clips could be placed at varying lengths. Essentially a gang rig.

Thanks trimmer21. Is a small enough cost that it is better to get weights for each decoy and be happier with the results. Will be easier throwing them out, plus as mentioned they can be spread out more natural.
If there was a current then the current could keep the pair from floating together but isn't the case for my spot.

Buy the weights you need and go with singles. If it's a matter of carry in weight reduce the size of the anchors. You don't need 1/2 pounders in a beaver pond probably 4 oz. would do the trick. Tandem rigs are great if you are only using one or two if you are running and gunning a series of ponds but it sounds like you want to put out a big spread ?

How deep is the pond, check out Texas rigging decoys