I bought a set of straps from Harbor Freight today: 1"x12'. They were $3.99. I had hoped to get the ratchet ones (on sale for something like ten bucks for four of them) but they were sold out.
I've got them hooked up now, and they seem great, and 12' is sufficient for the trees on my lawn, at least. I love the cheap stuff, and these fit the bill nicely.
uva uvam vivendo varia fit