it takes nowhere near that long to clear a bonus (at sites like party, empire, etc).
at the avarage .50/1 or 25$NL table, one can expect about 50 raked hands and hour- more if the game is shorthanded (6 max). that works out to about 20$/hr if one plays four tables at a time, or about 5$/hr/table. 4 tabling clears a "100$ 5x raked" bonus in about 5 hours.
at 1/2 6 max or 50$ NL (the games that most hardcore whores use to clear bonus, it's a bit faster, about 70 raked hands/hr, or about 7$/hr/table.
here's a
link that shows the various clearance rates vs the various games. you should bookmark this site.