Mercury info needed

Good stuff, everyone, thanks!!!!!! So, if these motors tend to load up after trolling for awhile I should firewall it every hour or so - I could do that... ;D I had a late 70's 40hp Merc years ago and I loved the sound it made at WOT!! I don't know if it loaded up trolling or not cause I ran it WFO or it was off. ;)

Thanks again for the feedback!