More info needed:
1. What temp are you trying to reach when using this method?
2. What (and how much) meat are you smoking.
3. Are you using your waterpan and if so, whats in it?
Reason i ask is that i had sand in my waterpan & couldnt get high heat easily. Also, i had to use a ton of fuel.
i emptied out the pan & just foiled it & now it uses a TON less fuel & hits, basically any temp that i want (MUCH longer burn times).
Big Joe Kamado