SF, KettleBELLS are OK, to add some variety.
For those who do pullovers, a heavy KettleBALL makes the movement easy and more comfortable than dicking around w/ a heavy d-bell.
(Easier to hold on to).
You can tie it to your already massive crank, and let it stretch it out even more if needed. V-Trips dont need it, he already has the kielbasa...