Just my 2 cents but I have been shooting at Homestead for a couple years now. I set a clear safety expectation when I arrive by ensuring all range safety protocols are followed. It has been my experience that is you set a strong example others follow. When someone doesn't follow the rules have a talk with them. Range safety isn't a joke it can be about your life or someone elses. Remember that unfortunately the same people scoffing at you at the firing line may very well be the idiots shooting at you during hunting season because they don't ID their targets. I'd rather talk to them at the range and remind them of the safety regs.
If they are really truely a problem get their license plate and report them to the RCMP.
As far as your trigger time goes.. Just to put it in perspective I just completed my PAL last summer. I bought my first hunting rifle, a nice little .270win then. I have put about 100 rounds down it over the last year and a half and I am thinking I might be ready to go out on my first hunt next season.
The way I look at it, if you can't dial your gun in to MOA at 100 yds under ideal conditions it would be very inappropriate to go out into the woods and potentially injure an animal and have it escape wounded due to bad shot placement or excitement. Not saying you would do that or that you aren't a great shot, just my opinion that you want to be very confident in your ability with your choosen weapon before heading out the door to shoot something. As an example, a co-worker is a decent shot at the range, went on his first hunt, sighted his first buck, pulled the trigger.. miss... lined it up again as it froze, miss again.. Came across another deer later that day.. miss... I wasn't with him at the time but it certainly reminds us why rushing out on the hunt with an unproven weapon (He was shooting his friends rifle he had not shot before in a calibre he hadn't fired and didn't know the characteristics of the trajectory etc) is bad karma
Good luck on your hunt.
PS: Safety is always job one and the guys are right the $50 to to go one of the local calgary ranges is ideal if you are not comfortable taking control at the public range.
PPS: Aside from my ~100 rounds of .270 on my hunting rifle I have shot over 1000 rounds of .22 cal, 500+ rounds of 7.62x39 and probably close to 1000 rounds of shotgun. It really is about trigger time and feeling confident in bullet trajectory. Good luck!