Wondering if anyone has info on a good staking system for this bet type or if they want to keep it quiet!! I can't decide whether to increase after wins or losses! Either way, a discussion might be interesting.

In my opinion "spinner" is a shocking bet.
The tote take is clearly accentuated because there are only three options. Because of that you are likely to get substantial unders no matter what you back. No amount of staking can turn poor value odds into long term winning odds.