Ok I had been thinking about buying a COC gripper for a while now, reading the thread "Help with the Captains of Crush" encouraged me to do so, and put in an order today for the #1. My main reason for getting this is to increase my grip strength, with the aim of being able to hold more weight on the DL. The last time I used straps I could pull about 25Kg extra with them. So my question how much of grip strength(more specifically crushing strength) correlates to holding strength.
Probably a much shorter version of the question is: How much did using the COC help you when handling more weight?
I can tell how it helped me when I got mine: At first I had trouble holding a 230lb bar while doing anything for more than 15-20 sec. Then I bought some HeavyGrips and worked my way up to the 200lb during a couple of weeks. Then I worked on static holds on my 200lb gripper. Suddenly, holding 300lb suddenly was no problem; even for longer periods. From what I've heard from other people that have been training longer than me (and use heavier weights), they've experienced the same.
I do feel that static holds helped the most, more than crushing for reps.
You'll reach a limit somewhere, but when you are just using COC #1, that should be nothing to worry about. I'm sure the gripper will be of great help, as will heavy lifting in general.
The gripper will help you, much as any other type of grp training. Its a good tool to have in the bag, train the grippers but do holds, forearm stuff, plate pinches, etc. The gripper will help but its only a part of the overall picture.
DBs will be easier to control than long farmers, but they're going to want to "roll" out of your grip, which farmers wont do. I've taken 300lb farmers for 50' I can't imagine I coudl do that with 300lb DBs
I dont think the EZ curl bar will roll tho, you might be onto somehting there. Try checking out the Diesel Crew's site, or ask Smitty on EliteFTS, I seem to remember them doing something with a row attachment for a cable, using that as a handle and hooking it onto EZ curl bars.
Regarding the original question - COCs:deadlift/farmers grip strength as pushups:bench press
If you've never really benched or done pushups before than one can help the other. But at a certain point they are more independent of one another. Similarly if you can't close the trainer, then working on crush may help you, MAYBE it'll help you if you cant close the 1. but beyond that they seem different. Many people are fans of static holds with the gripper tho, albeit no 1st hand experience on my part.