Ask the Experts / wooden coaster

im kinda new to rct2 but i dont know how to do this. I saw this on a spotlight park, it was grizzly a wooden rollercoaster. could you please tell me how to make a giant loop and looping rollrcoastr trains on a wooden rollercoaster? and splash boats have a lift hill chain speed of 70 mph, this is really really confusing me, thanks.

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