希腊采购需求：车顶帐篷，四驱车顶帐篷，越野车顶帐篷，家庭车顶帐篷，自动车顶帐篷，铝合金车顶帐篷

I'm looking for some guidance on purchasing a roof tent for my new truck. Ideally, I need a hard shell tent that can accommodate 3-4 people. I'm considering either a roof type that unfolds or a fixed size tent for setup. My preference is to have the tent positioned on the truck bed at a height that aligns with the roof of the vehicle. Could you advise me on which tent option might be best suited for my needs? Additionally, I'd appreciate your insights on the best setup location on my truck to ensure stability and convenience. Your expertise would be really helpful as I make this decision!