I'm not a fan of manual stretching. If everything's not just right, I don't feel like I've had a good workout. For instance, sometimes even in it's flaccid state my shaft will be kind of plump but my head will be small. Getting a proper grip becomes next to impossible under these conditions. And of course there's always some slippage and hand cramping no matter what. Then there's jelqing, which I find to be much less of a hassle and actually somewhat enjoyable. I'd forgo stretching completely and just do an hour of jelqing a day if I knew I'd reap the same benefits. So would this be a feasible plan, trying to gain length solely from jelqing?