Oh, sorry I misunderstood slightly. Maybe try pointing your bar light a little lower? When I do drops or jumps (nothing crazy, I’m no Danny Macaskill) it’s my bar light that illuminates the landing area. My helmet light is actually pointed quite high because I tilt my head forward slightly during fast descents and I like it to project far, so it’s the near-field bar light that usually covers the landing zone.
Another issue may be the lights your using. Off-brand lights often overstate the output by ridiculous amounts or have poor beam patterns, I think it’s worth it to spring for the good stuff if you do a lot of night riding. I use a Serfas TSL-1200 on my head and a Lezyne something-drive 1100 (EDIT: Just checked, it’s actually a LiteDrive 1000XL) on the bars and so far I’ve been very happy with both of those models. I usually run the Lezyne at a lower setting of a few hundred lumens to extend battery life, the Serfas has a giant remote battery so I can run it full-bore all the time.
Beherenow, that downtube light idea is actually super cool! I seriously think I’m going to get a strip next time I order from superbrightleds and try that out! Already have some battery banks I could use.