I use the Barton Reading & Spelling System, an Orton-Gillingham based program. After exploring a number of options, I found the Barton System to be very efficient in terms of helping students develop decoding skills. The sequence works well for people who have dyslexia because it is based on orthographic (spelling) development. Most programs move through phonics concepts too quickly, and do not allow time for dyslexic students to develop control of one skill before moving on to the next. Barton covers phonemic awareness, phonics, orthography (spelling), and fluency. In addition, I provide a multi-sensory approach to learning sight words; games to practice concepts; and other activities that serve to reinforce and review learned material.
For the program to be effective, and for a student to experience success, two sessions per week are recommended. Three to four sessions per week are optimal, although it's challenging for most families to fit more than two sessions into their schedules.