Crosscutting and ripping long stock on the table saw can be cumbersome. But there are steps you can take to do the job without a lot of hassle.
One key to controlling the workpiece is providing good support during the cut. You can see the setup I use here. I start by attaching a long auxiliary fence to the miter gauge. This helps keep the workpiece from skewing as you move it across the table.
Another key is providing some “outboard” support at the side of the saw for the opposite end of the workpiece. The goal is to keep the workpiece flat on the table throughout the cut.
To keep the workpiece under control, it helps to clamp it to the auxiliary miter gauge fence.