Couldn’t they just aim the high points of the ride away from Staines and towards the back corner of the park? If they did that, surely that might overcome some of the problems?
I’ve often heard it said that Thorpe could run a hyper around the back of the park from Old Town/the Logger’s Leap site, with the main body of the ride itself running along the service road around the back of the park.
For what it’s worth, John Wardley even said that a hyper would be doable within Thorpe’s planning restrictions.
In terms of where Wardley said this, it was a comment made within Making Thorpe Park regarding a B&M Hyper that Wardley and B&M had strategised for a 2012 coaster instead of The Swarm. The source was cited as an interview with John Wardley himself conducted as part of the research for the book (the source is cited as “Interview with John Wardley, 20 July 2020” in the book’s bibliography). Here’s the exact comment; the relevant part is in bold:
“When [B&M] was approached to suggest ideas for the first of the new development islands, they were strongly against using the new Wing model. The flat piece of land didn’t really play to the strengths of the concept, and Wardley felt that a different B&M option should be used instead. His preference was a Hyper Coaster, a tall ride that offers high speeds and massive airtime. Having good knowledge of local planning restrictions, he was confident that permission would be agreed and it would be the perfect complement to the four major rollercoasters already in operation at Thorpe Park.”
For context, this would have been a few years after Stealth, perhaps around 2009-2010.
Thorpe’s height ceiling is 500ft, apparently, with structures over 200ft needing to apply to the CAA for approval (due to Heathrow being close by). While I’ll admit that a 500ft coaster seems like a long shot in terms of approval, I don’t see them struggling too much with a hyper in the 200-250ft range, personally. As much as Stealth may have required special permission at the time, I’d argue that it may well have set a precedent for the minimum height that Thorpe would be allowed to build a coaster to; if a coaster of Stealth’s size or a little bit taller encountered issues, then the park could quite feasibly say “We’ve operated Stealth at 205ft for 15 years with no issues” to defend themselves and make a case for the approval of a hyper coaster.