Yes I do, it's basics. I normally play with 3 randoms as I'm normally duo with 1 other and between us we can normally carry hard.
Yes lets talk about very situation times, lets try and find that one exception to the rule with your setup, watch most pro games now, generally 9/10 it's a smiteless blue/red pull and it's a standard thing in most ranked games at gold and above. I found your way generally works on low elo games but with the introduction of the short wards for support and well people generally having common sense to go in to the lane behind the minions your tactic rarely works. To be frank I've seen it work once in I'd say the past 150-200 games.
The way I play I expect others to play similar to that of what high elo people play and that's to help the jungler, I've possibly been spoilt by playing with good players but meh. Granted you're not on communications if you're with randoms. You don't help the jungler you don't get help simple and to be honest it's rare I don't get help as a jungler.
I must admit when i play ranked with my team mid + top or bottom whoevers closest to what they need red blue/ always help the jungler take out wraiths/red without stealing any xp, but in a random game your not playing like a pro. i just play for fun / try new things etc.