You can earn more money on the bounty hunter side missions by capturing bounties 
alive. When you find a wanted poster that offers more money if you capture them 
alive and are having trouble doing so, use the following trick. Kill all gang 
members or bodyguards (if any). If the bounty is on a horse, kill the horse. Get 
close and melee attack. This will stun the fugitive and present an opportunity 
to grab them. Then, subdue the fugitive. This will award you more money for each 
bounty. If you accidentally release him, you can try to melee him and grab him 
again. However, if you do this too many times or if he has been shot, you may 
kill him and get less money.