as we all know mission location has a big effect on times. so when i used to run the cayo Perico heist i would use the dinghy trick to only get the good locations with the missions, but to be honest i got pretty tired because it was getting to the point where i was spending almost the same amount of time setting up the dinghys than i would in the actual run.

i guess my question is r there other ways to manipulate what location u get for missions other than the dinghy method

For plasma cutter/security code and fingerprint cloner, they have set spawns. So if you know them I don't really see a need for dingy spawning besides blocking off the absolute worse ones.

The ones I'd really block is the two terrible contruction spawns for the torch and the Penris building for weapons (Obviously block Merryweather).

But besides that I leave everything else to rng and just deal with it if it gives me the less desireable one, though if you block the spawns mentioned. The "less desireable spawns" should still be good.