ive tripped on LSD 5 times, and smoked weed on 4 of these...
first time was one tab with NO weed, thigns were very smooth, slight visuals and clear mindset
2nd time was with two strong tabs, had my mind blown... smoked weed a few hours in and all it really did was make me confused for a bit and go 'into my head' for a bit.. trip was already strong so didnt affect it 2 much
3rd time was with 1/2 of the above tabs^^.. 2 hours after taking, noticed a mood lift and smooth flowing thoughts but was closer to sober then tripping-smoked weed at 2 hours and this kicked it up HARDCORE-intense racing mindset, extreme euphoria etc, no real visuals but definte changes in perception
4th time- 4 tabs of light acid, mind was fairly blown again and cones had the same effect as my 2nd trip plus i was thrown into intense thought loops for a bit after each cone but i didnt NOT enjoy it
5th time-one sugar cube, was tripping about the same as the 1st time. smoked weed and it was ewnjoyable but not intense and didnt add confusion
im a near daily weed user btw.. from wot i can gather- weed can really kick up low doses, but doesnt significantly other doses (for me anyway)-can add some cloudiness or cause me 2 get lost in my own thoughts
personally, the coolest thing about weed and LSD is looking at the visuals formed in the thick smoke u breath out

always has jumping colours in it and looks so cool lol