Asteer, it depends on what I want to work on. Today, I did 6 rounds with my 14 oz gloves because the extra weight is what i'm pushing around in the ring. It also adds mass to your shots and that bag starts to really move. I will move to light gloves to work on speed and I occasionally go bare knuckle to make sure my technique is good. Gloves and hand wraps will give you a false sense of security (of course, if the bag is not leather but canvas, it's gonna hurt for a while going bare knuckle and it can slow our progress quite a bit if you've got sore knuckles). I would reccomend starting out with some light gloves that wrap around your wrist and go easy at first then switch to heavy gloves (14 or 16 oz) to build your shoulders up... they will get heavy. The important thing is to stay busy for an alloted amount of time. I do 3 minute rounds but 2 minutes will give you a hell of a workout too. Here is an audio file I created for a3 minute round
. simply drop it into your burner software several times for as many rounds as you want (I have a 10 rounder CD) and burn as an audio file. Works great!
Because you're training karate techniques, strike has the right recipe. I'm mainly just punching right now but definatley develop some "simple" combonations like jab/cross/crashing elbow or Jab/Cross/Roundhouse etc. I am occasionally doing stuff like this on my last round at home (I won't do stuff like thatin the gym, hah hah) but not usually (gotta work on the punches for now, you know).
Don't make your combos too complex for now because it will throw your rythym off and that is one thing you'll want to develop on the bag... not just power. You'll see! Happy hitting!