They can raise the majority of the turn without significantly reducing the top speed by either doing something like the NL picture earlier in this thread, or inserting an overbanked turn. I'm thinking medium height overbank (maybe 80-100' tall), but without tightening at the top as Intamin does on most/all of their overbanks. I tested and got around 2.9G at the top of a turn like that. The top speed would be restored, the duration of extremely high speed would be reduced (to help with the mechanical issues), and the forces would be significantly lower over a good section of the turnaround, which would provide some respite for riders.
Here's my sketch. Thanks A113.
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