Swimming Equipment: Drag Chute

I purchased this new drag chute by StrechCordz.  I used it for the first time on Monday and have to say it's very effective.  I purchased the 8" chute and can't imagine the drag the 12" would cause.  I read a lot of reviews and even swim coaches were getting the 8".  The first swim, I didn't think much of it but that was because the tether hadn't full extended.  Once it did it about stopped me in my tracks.  I got through 400 yards but realized my form was compromised by the effort.  I put on some paddles and that helped a lot.  My muscles got a serious workout.  Given how inexpensive it is, definitely a nice training tool to have.