Ok so I'm not Nick Bakay but I gave it an effort...

Fishing: Fish the Skykomish knowing the hatchery fish have been delayed or destroyed in the ocean...
Drugs: Wander the streets of downtown Seattle knowing that a huge shipment was just busted at the port...
Advantage: Fishing

Fishing: Lack of steelhead forces you to fish for other gamefish...
Drugs: Lack of smack forces you to smoke alot of grass...
Advantage: Push

Fishing: Drive a hundred miles with three guys you just met, check four rivers to see if they are in shape, go home without having made a cast.
Drugs: Drive two hundred miles with three guys you still haven't met because one guy knows a guy who knows a guy, go home without.
Advantage: Push

Fishing: Buy your gear on the internet...
Drugs: Buy your gear on the internet...
Advantage: Definitely drugs...

Fishing: Hitting bottom...
Drugs: Hitting bottom...
Advantage: Fishing

Fishing: Plunk all day in one spot, no fish...
Drugs: Sit on the couch all day in one spot, no drugs...
Advantage: Push

Fishing: Do drugs..
Drugs: Go fishing...
Advantage: Drugs

Fishing: Hooked after the first hit...
Drugs: Hooked after the first hit...
Advantage: Definitely fishing...

*Purely intended for comedy value, any resemblance to actual events is coincidental