Question

i have never done a rotation battle and used spikes mainly because i dont know wether it would work
every time you rotate do you get spiked or is it just every time you switch out and same for stealth rocks and ttoxic spikes

Answer 1

No, it wouldn't work in a rotation battle. Toxic spikes/spikes only come into effect when the opponent switches Pokemon. This also goes for Stealth Rock.

Hope this helps =)