The Psychoaster said:
There's certainly a reason why there's only been 4 installations of the ZacSpin in the past 5 years - and it's certainly not because they're overcome by demand! The uncontrolled spinning is a massive putoff and I certainly wouldn't build one there simply because it's "inexpensive and requires very little space." The throughput, as Zak says, is horrific - 800pph according to the currently existing installations. If there's one thing BPB doesn't need it's another 'coaster' with a dire throughput!
I'd say that 4 installations in 5 years is a pretty good rate of sale. There are some coaster manufacturers out there that would love to be shifting that many coasters full stop let alone just one model.
I think a Zacspin would be perfect for Blackpool. There's nothing like it in the UK, they're very eye catching, it'd be inexpensive, it would meet the space requirements and from what I hear, they're pretty good rides. Yes, the capacity could be better but I don't think it's as much of an issue at a park like Blackpool than at the likes of Alton or Thorpe.
It seems that you've decided you don't like them (even though you've never ridden one?) but that doesn't mean it's not the right coaster for the park. To say that the unpredictable spinning is a massive put-off to parks just isn't true, that's your opinion of the ride based on videos you've seen.