The etymology of the term hammock is obscure. Dictionaries usually give it as an archaic form of hummock (hammock appeared in print earlier than hummock). Hammock is first attested in English in the 1550s as a nautical term for a tree-covered island (a mound of trees) seen on the horizon.
Here is a little breakdown for what type of yeast works well with which fruit: Montrachet: A very good general use wine yeast for most fruits. When in doubt use this yeast. One of the more neutral yeasts available so that the fruit flavor is what comes through the most. Cotes Des Blanc/ K1V-1126: These yeast strains are very good for fruit that produces a white wine look at the end. Wines such as apple or pear will work very well with this strain of yeast.
Not all sugars are fermentable with sugars like the five-carbon arabinose, rhamnose and xylose still being present in the wine after fermentation. Very high sugar content will effectively kill the yeast once a certain (high) alcohol content is reached.