If your bong is not "hard" enough, i got a hint for you.

Smoking a bong is not really great, vaping a bong is great.
All you need are 3 pipescreens.
Put some weed in your bowl and put 3 pipescreens above the weed.
When you smoke it now, it gets vaped before it really starts to burn.
Much more thc and much less condensate.
When it starts to burn, hold the flame higher or place the screens higher.

Only better than this is bong vaping with a hot air gun.
All you need is a hot air gun with a temperature around 250 degrees and a bong bowl, that is big enough to place the gun on or in it.
Lay 1 pipescreen on the weed and start inhalin before the gun is placed on the bowl ( or the screens could fly away ).
I got a steinel Hl 1910 E.