I am trying to build an angled box (which will be used to hit golf balls off of, to simulate different lies, uphill, downhill, etc.). I have the basic plans from someone else, but am wondering what kind of tool setup I would need to do it right. The basic layout is as follows. The platform sitting on top is a 4x4 piece of plywood. The front end of the plywood is supported by a 2x8 and the back is supported by a 2x4. Each side is a 4 foot length of 2x8 that is angle cut down to 2x4. I'm assuming I would want a couple of similarly angled 2x8s in the middle to help support my weight. What would be the best way to angle cut the 4 foot 2x8s lengthwise down to 2x4? I really appreciate any feedback you can provide. I have included an image of what the finished product looks like. Thank you.