While a pure won't be able to
RuneScape gold perform much since Pking has ended, you can still make one. You can train Attack and Strengh using Dummies at Varrock when you reach the highest stage. Once you are there you can fight men, goblins and chickens. You can move up to more powerful NPCs as you increase your level. I recommend you train your strength as well as attack and power at different levels. Progression like this is highly effective.
5 Attack, 5 Strength, then 10 att, and finally 10 strength (you will be capable of training at 25-30) 35 str 30 att. 35 att. 45 str., 40 att. 50 str. 45 att. 55 att. 40 att. 50 str.
It is best to get five attack levels per 10 from 50+, since it is useless to have a pure character with 99 str, but with 50 attack and you wouldn't be able to hit. Prayer, defense mage, range and defence are yours to decide should you wish to learn these skills. The best is double comparitive. If you're looking to eat something, I would not recommend making a pure.
Many people are creating new pures for bounty hunters 1 vs 1. We're not sure when the pure will go live. It could be in the next few weeks (not likely), or in cheap OSRS gold one year. Don't wait for 1 vs 1 bounty hunters to make your pure.