Techniques: Quick Charge
You can charge up the Speed Booster faster if you don't hold the run button the whole time, rather take one step forward in the direction you want to go, then press and hold down the run button. This will allow you to charge the Speed Booster more quickly than you could normally, allowing you to Shinespark/Super Jump more often.
Examples of the Quick Charge include Speed Tricks: Brinstar Energy Tank (with comparison videos with and without using the Quick Charge) and Speed Tricks: Maridia Main Street Missile Pack.