A lot of correct answers here, on both sides. For what I do I agree with TeamSpeed. Running and Gunning is probably the best way NOT to get the shot you are looking for - Generally. Basketball is extremely predictable. You know where they are going. No guessing there, like in football or some other sports. So even in high school basketball, you know if they are looking to make a move to the hole and can wait until they make the break. Basketball reminds you of sometimes (painfully) how long a second can be. And yes, high school players generally are slower than college and pros - Freshman like Williamson at Duke are outliers to that rule. So yes it take them longer to clear the distance between the top of the key to the hoop - but that also gives you more time to wait and don't need to be as quick on the trigger. I know you don't want to miss anything... but if you practice anticipating and waiting, you will be a lot happier with the results.
I assume you are wanting to shoot raw to better be able work with the images and fix the issues that come up in shooting in dark HS gyms. The issue you are having is the size if the RAW files. A MK IV large JPEG is a lot smaller than a full size raw file... hence why it takes a while to dump to card. If you want to have raw files to play with, you might want to write to m-raw, which is about a 9 mpx image. In today's world, that seems small. But remember for years all the stuff you saw in Sports Illustrated was coming out to MK IIn's - which was 8 mpx images then cropped. So depending on what your final output is going to be - if it be screen - 9 mpx is more than enough and the files are a lot smaller than the 16 mpx raw files.
Otherwise.... jpegs are a wonderful thing.
Now to confess my full hypocrisy here.... I shot Gymnastics this weekend and it had been a while. I didn't get to go to the practice session, so all the floor exercises were new to me. So to cover my " " I shot all the runs end to end hammer down. Average run was 21-23 frames long with a 10 frame camera. The issue was my unfamiliarity with the what the girls would be doing. I typically do much better than that. Uneven bars.... I basically shot single frame because I could tell what was next.
Moral of the story, the more you shoot, the less you will need to shoot to get what you want. I would have no shame shooting JPG....