Just wanted to post some quick info on bubble and dry sifting regarding yields I have obtained

Per 100 grams of trim  I get from ~4-11 grams of good quality hash from dry sieving. This is highly strain dependent. For example the gorilla glue #4 I have makes the 11grams whereas my master kush plant makes 4grams.

Per 100 grams of trim I get ~5- 16 grams from water extraction (bubble bags). Same as above, varies widely depending on strain and resin content.

I have done a few hash runs using whole flower and the yields are considerably high, but so is the amount of contamination. Lots of the pistillate hairs seem to break off and get in the hash, although I think with practice you could figure the right technique to minimize this.

yields for flower

~8-22 grams dry sift

~10-25 grams

As far as smoking or "dabbing" is concerned I find these methods to make the best hash. I have tried pretty good BHO, but there is a sense of satisfaction for me knowing that my concentrates are totally organic, since I go through the effort of growing organic flowers this is important to me.

Also I should note that my standard for hash is that it has to bubble or be "dabbable" and not leave a nasty residue on the skillet or in the vape.