For those of you with push carts . . . .
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I have the SM Speed Cart V1 and an older model SM Four5 carry bag. The bag weighs in at 5.5 lbs, a bit heavy for a carry bag, but has individual club dividers. Yes, the bag does twist a bit when on the cart; no biggie, I have more important things to occupy my mind while playing.
The bag is not loaded down - probably a dozen balls, tees, etc and a rain jacket. Add a bottle of water to the necessities, please.
I generally use the cart during warmer/hot weather. I found that carrying when the course is soggy tires me less. I'm not a fitness nut nor a young buck - not at 65, anyway.