Although the Guarantee3 Basketball Trainer has multiple uses, from my experience, it is not worth purchasing if your focus is on improving your shooting range. In addition, I encountered major durability issues in the product. I am guessing that my overall wrist / arm strength has improved from using the Guarantee 3 over three weeks, but I cannot see any clear improvement in how far I can shoot the ball. This is likely due to my shot mechanics, as the Pro Shooting System suggests. However, I do like it as a tool that can help improve the strength in both arms and can be used indoors without a basketball. This was particularly helpful during the recent California rain storms.
The Guarantee 3 is like a belt that adds resistance to your hands and arms with resistance bands. Thus if you practice your shooting motion or dribbling with it, you can imagine how your body can become stronger this way.
I was given a Guarantee3 review sample by Kristen Lavoie at ChicExecs. I also talked to Dave Felkel, the inventor, over a phone call. Both were very nice. Dave mentioned that the dribbling use for Guarantee3 is not necessarily just for strengthening your dribble – it also gets you used to dribbling low to the ground, a bit like the Dribblepro Training Basketball.
It is also great in that you can watch TV and work out without affecting anyone (noise, furniture damage).
I never experienced muscle soreness while using the band, even though I used the shortest band to create more difficulty and did many more reps than suggested. The workout entails 30 reps increasing gradually to 60 reps. I did 150+ reps 5 days a week for 3+ weeks before the strap on the hand tore (shown below) off – I had planned to continue this for six weeks.
In addition, the bands created so much friction on my arm as to eventually cause bleeding (I wore an arm band to stop further injury).
To read more of my basketball training product reviews, please click here.