Here is what is written on kettlestack.com
What about Renegade Rows ?
This link shows the "renegade row" exercise with a regular cast Iron Kettlebell:
www.bodybuilding.com/fun/kettlebells.php?Name=Alternating+Renegade+RowTo avoid tipping your wrist (remember all your weight is on the anchor hand), you have to be a bit careful planting the KB on the floor and ensuring that your forearm is fairly vertical.
Since a regular Kettlestack has a cylindrical bottom, renegade rows with Kettlestacks require an improvised cradle (towels or wood) for the Kettlestack to drop into. It's not optimal, so if you're determined to have a Kettlestack with a flat bottom-contact us before you go to Home Depot.
The compensation is that while Kettlestacks are less "floor stable" than cast KBs in the "handles up" position, in the "handles down" (with 4~5 plates in the middle stack) they form a wonderfully stable platform for divebomber push-ups.
With a pair of KSs you can superset (C&J's or Snatches) with divebombers until your shoulders _melt.
In response to my query on whether stacks can used for rrows and bcrawls, here is Clay Medwin's official response.
Hi Boey,
Feel free to repost our "official" Kettlestack answer.
I'd say that renegade rows (RR) are more skill than strength move;
The RR requires that the forearm be very close to vertical and
that there should be a minimum of side force to prevent the
"catastrophic tip". Note, that a flat bottomed KB isn't THAT
stable- try doing a onearm pushup off the handle on a regular KB.
If the floor is spongy __enough for the Kettlestack in your anchor
hand to sink down, then it will resist tipping just like a flat
bottomed regular KB- but the operative phrase is "spongy enough"; I
bet sand would work great, but your mileage will vary.
That said, after reading your question, I went back and formed two
circular cradles out of bath towels and was able to do renegade rows
with 65lb Kstacks (laying around); I never felt the groove of the
exercise and a video would probably betray poor form.
For rows I use a curling bar- it keeps the weight away from
the hand and allows a really full motion.
For bear crawls, I'd say that you'd need a
grassy or sandy area and a close friendly relationship with the local
sheriff to avoid getting picked up for crazy behavior in public.
OTOH, Kettlestacks, make great platforms for OAPUs and divebomber
pushups, while Kettlebells are basically useless in these motions.
Feel free to send more q's,
Regards,
Clay Medwin
kettlestack.com
cmedwin@kettlestack.com
Judging from what the makers of the stacks have written, even they admit that rrows can't be done properly using stacks WITH SUPPORTS. If you can't even do proper rrows using stacks WITH SUPPORTS, what more with bcrawls? For bcrawls all he could say was to use grass or sand. He didn't directly admit that they could be done. Neither has anyone else since the stack was produced. Are both rrows and bcrawls totally impossible to do with stacks? WITH SUPPORTS, perhaps they can be done, there's always a possibility. But since no one has ever claimed to be able to do them with just stacks ALONE as you have (more than one person must have been crazy enough to try after all this time), your claim is still really very questionable.
But like I said earlier, since you still say you can do them, so be it. There's nothing more I can say on this.