Laying patio for a trampoline - Advice please

[LCP]

I'm laying a new patio using either Bradstone Old Riven or Marshalls Saxon range.
Part of the patio is for a 12' diameter trampoline & enclosure to stand on and I'm unsure if these slabs will stand up to it's weight + children bouncing!
Both choices are 35mm thick slabs but saxon is a flat surface while old riven is uneven.
Would bedded on sand or mortar be best?
I do have the option of reusing the 600x900mm grey slabs the builders put down - I imagine they're tougher. But of course the finished patio will then be of 2 types of slabs (and not as beautiful).

Does anyone have experience of sharing their garden with a trampoline? Does it mark your slabs? Have you experienced slabs loosening or cracking?

If there is any doubt, I'll go for reusing the ugly grey ones.

Thanks in advance.

LCP

[Ross-Paving]

Did our own two years back, nothing moved or cracked as yet. I made sure that the area for the trampoline had at least 50mm of sharp sand:cement 10:1 under the slabs, then to stop the metal supports marking I fixed 4x2 wooden planks with u-bolts to each support - trampoline remains portable and all looks tidy.
I used Marshalls Heritage, more contoured than Old Riven, but the wood helps spread the load.

[LCP]

Thanks for that info.
I will be using the 10:1 mix as you recommended. I'm reassured yours has lasted 2 years with no probs.

LCP