Tyres for polished wood - 2wd

[colmo]

I've returned to my original stomping ground of CVMCC (most westerly BRCA club!) which runs in a small church hall, so polished wood. No carpet, and unfortunately, jumps are infrequently used too.

It's a 4wd buggy club, but for an event later in the year, I'm learning how to drive a 2wd there. Last night, after a few rounds faffing around with springs, weights and shock positions, I nailed down a working setup on my X6, which went brilliantly for the first minute or two. Then it would all go wrong - the car would get squirrelly and became a devil to drive. My guess is that the tyres, Schumacher yellow minispikes, fairly worn, were going off.

So, how do I prevent this?

1. Use fresher minispikes.
2. Use full spikes (the larger spikes should heat up less.
3. Change the insert to prevent tyres heating up.

I'm also considering playing around with 'slim' tyres - 4wd fronts mounted on the rear, which would exacerbate the heat problem on minispikes, so perhaps might need a harder compound or larger spike?