No elk in Alaska, well a few in the part Canada didn't want. Our regs say Moose, Brown bear, and mountain goat bows need to be at least 50 lbs peak draw weight. If you can kill a 1,200 pound Grizz with a 50 pound bow an elk should be no issue.
Frankly I've never understood the "need" for a "heavy bow" you want to prove you have external plumbing and use a 75 pound or higher bow that's fine.....just don't try and tell the rest of us your shooting that monster because it's what you need to kill the game you chase. Native Americans killed Bison with a 25 pound bow, we are not buying it!