It looks like clamps are no big deal for this fucker. You better hope you have his level of tolerance.
If you rolled a . . .
1) Put one clamp under the head of your cock.
2) Cover your balls with as many clamps as you can fit.
3) Put one clamp on each nipple.
4) Put one clamps on each nipple, and all the rest go on your balls.
5) Put all of your clamps on the shaft of your cock.
6) Cover the head of your cock with as many clamps as you can fit.
Wait 3 minutes, and then remove the clamps one at a time. Stroke 300 times.
Roll again, and continue.