diplegic cerebral palsy - any ideas to help with walking and to stop leg twitching?

Hi my name is neil  I have diplegic cerebral palsy I find it difficult to walk long distances so I've got a mobility scooter wich helps .I also have a thing called a boxia foot suport wich helps me a fair bit it stops me tripping up as much .it's well worth a look I found them on eBay. I've also used leg splits but the plastic kept rubbing my angle wich hurt a fair bit and 2 painful to wear .I've also used a decide called f.e.s it's like getting your legs zapped by an electric shock but it kept giving me blisters on my legs so had to stop wearing them so the boxia foot suport seems so far the best .yoga and going to the gym helps. Has any body got any ideas to help with walking and to stop leg twitching .I also have botox injections every 3 months that does help