--kokanee are sensitive to water temp and oxygen levels. warm temp and algae blooms in osoyoos can be toxic.
--check out
www.fishwithgary.com for good over view of the art and science.... especially for trolling of kokanee.
--Rod's vid descriptions on this site great advice for casting and drop shot techniques.
--kokanee tend to school so if school goes through low oxygen or toxic water they all get nuked...
--targeting-- larger kokanee tend to hang out below or near larger schools so if you get into school of smaller fish try dropping line deeper same presentation...because of the schooling bite is on and off as school moves.. fast action when you hit them.
--will be fishing osoyoos may long weekend and week but mainly casting for bass... if colder weather will troll for other species. I never really thought to target kokanee there as usually fish in warmer weather.
--early season is prime on Skaha so I expect downstream at osoyoos to be good now as well.