all u need to learn is how to read the water and presentation... I believe everything will work with right presentation.
My friend always caught lots of fish on streamers, I guess rap will just work the same (i.e. picking on aggressive fish). The only problem is that with spin rod, you can't get a nature drift when fishing most of sections in the river, just something wrong with presentation.
Of course, rap works in a spot on the river. Such as the hole in the side channel below glenmore that people fish a lot with spin gear
Just my 2 cents.