Sledgehammer, mace, clubs, kettlebells all train your grip dynamically. I train exclusively on these implements, and in fact I walked into the gym 2 Saturdays ago and pulled 315 lbs raw (no straps) for 5 reps. I'm 165 lbs. In fact I've only been in the gym twice this year. Since I train for function I only lift what I can grip, and I have a real nice pair of leather straps which haven't been used in over 2 years. It's up to you, but a strong grip also helps all your other lifts. Since you're getting back into it, I would continue to lift raw even if your numbers are lower but as your grip strength increases so will your overall numbers.