Vented roof lines are good and are useful for venting those pesky braziers. At the crest of the roof, just raise the crest line with the short poles. Any building I build seems to have this feature since the braziers give off so much smoke but are superior to torched and such. It can also be made to look nice. I posted several screens a while back that showed these as well as other types of remedies, should be able to check them out in my profile.