Does a Johnson 135 outboard motor have enough power to pull a water skier?

It all depends on your boat first and the actual skiers to a lessor degree. If you have smaller ski or fishing boat (19' or shorter), then that is more than enough power to pull whatever or whoever you want to with it. I am 6'1" and stocky in my earlier days, but I have skied behind a 17' bass boat with a 70 hp outboard pretty effortlessly. If your boat is 20' or larger, then it comes down to the weight of your boat, the type of prop you have, etc. and it is less likely that you will be skiing much with that boat/motor combination. **Worse case, try it... You will either pull the skiier up, or not. Remember too that you can change your prop to a power take off prop that will give you more BITE from a dead stop for this situation, but takes a little of your top end speed away.