i tried the one handed jelq yesterday, not only was it ineffective, it also caused my penis to turtle and i couldn't get it erect until this morning. DLD, when i jelq the regular way (alternating hands) i actually move blood up the shaft but for my left hand it just feels like the blood slips away after i move it halfway up the shaft (towards the glans). Its not that I dont grip it hard either even when i squeeze it the blood slips but when i use my right hand its a nice thorough jelq. Do I have to squeeze it or is it good as long as im moving a bulge of blood up the shaft?