get a spare rear wheel with a proper turbo tyre on it. Doesn't have to cost much or even anything, a lot of wheels are worthless once the brake track is too worn as it's cheaper to replace then repair so bike shops just throw them away.
By all means keep a training wheel to keep your nice tyres in good condition but...
proper turbo tyre.
These things a con. Just use any spare training tyre.
@Sumo started
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get a spare rear wheel with a proper turbo tyre on it. Doesn't have to cost much or even anything, a lot of wheels are worthless once the brake track is too worn as it's cheaper to replace then repair so bike shops just throw them away.