I recently completed my first timed Megaminx BLD solve, and was invited to share my method here.
My execution is fairly standard: I use cycles of three for both corners and edges, with a buffer, slave buffer, and the piece to be solved. I alternate between clockwise and counterclock based on whether the piece is the first or second of the letter pair.
My memo method is more unique. I split the cube into three sections: top + bottom face, the five faces adjacent to top, and the five faces adjacent to bottom. The pieces on top are lettered A-E, and the bottom are lettered F-J. The adjacent to top are lettered A-Y, as well as the adjacent to bottom. To differentiate between the groups, I give each a color. Top+bottom are yellow, adjacent to top are blue, and adjacent to bottom are red. This allows me to use normal letters pairs to memorize, and gives colors to the images, which makes them last better in long term memory.
If a pair is blue, blue, the image is blue.
Red, red, is red.
Yellow, yellow, is yellow.
Blue, red, is purple.
Blue, yellow, is green.
Red, blue, is pink.
Red, yellow, is orange.
Yellow, blue, is black.
Yellow, red, is white.
For example, the sequence: blue d, red k, yellow g, blue p, will become a purple Donkey Kong eating black grapes. Another: red c, yellow c, blue f, blue y, will become a orange corn cob with a blue fly on it.
This method works very well for me, and I hope others find it useful!
