Vesc 4.12 cooling system?

Hi there.
Did someone implement good 4.12 vesc cooling system? I mean in case we are talking about classic 4.xx HW, it is 3 mosfet per side pcb that can not be attached to the heatsink that easily. My board really struggles from overheating since i moved from 3:1 to 2:1 gear ratio, so I wonder how I could deal with the heat on both sides?

Maybe have a look here