recovery boards

The question I have is how many are most people running with? I see a mix between 2 and 4. I'm assuming if you are roaming solo 4 is probably better than 2, but if you are roaming in groups I assume that 2 is just fine.

I have been looking at buying Maxtrax. I contacted them and they said if we get 20 people signed on for a group buy, they will offer a 15% discount (full size tracks are $300.). They will charge shipping (for example $13 to SF Bay Area; more further away). So will shipped direct to you from...