I think we'd be pushing it a bit far asking for more lanes, really.....even mid-week, most sessions are fully booked. And the weekends will be even more so. We don't want to be upsetting any regulars who might already be missing out on being able to use the 38 yard lanes. Plus, with the 38 yarders, we have space behind with some seating / benches for mingling whilst not shooting. Very, very few will be intensively shooting for long periods, so everyone will be able to get in as much trigger time as they want.
P.S.....We could always set a limit on numbers, if you prefer.......something like 30? Pop that onto the OP and it'd be fair at that, maybe?