On the equalization issue, a little bit of congestion (doesn't even have to be a cold) can make it hard for some people to equalize. Also, if you get to the point where you are feeling discomfort, definitely stop and ascend a foot or two. It can often be more difficult to equalize with additional pressure on your ears. If you're feeling discomfort and trying to equalize while holding your (discomfort) depth, it can often be a fruitless exercise. Ascend a couple of feet, take your time, and never try to push it. If you're having trouble, something else that helps some people is to wiggle your jaw around (basically open your mouth as much as you can without spitting out your reg) and lean your head from side to side while you are equalizing. This can sometimes loosen up the eustachian tube enough to allow air to move through and equalize.