I cannot find any information on the strategy to use to fly them competitively nor can I find anything that gives one an idea how to set up a MAT in one's flight computer. (Nor how and when to change the task in mid flight.)

Any advice (or direction to documents) would be greatly appreciated.

Thanks in advance -

Lou

Have you tried the appendix to the rules, John Good's guide to sailplane competition, and the instrument owner's manual? The clearnav has extensive MAT management tools.
John Cochrane