Noticing that some have included info about their useful/elegant topping lift management modifications, I thought to include another variant on the theme. Photos attached, but here also a description:
I've got SS wire affixed to the mast top. About two-three feet above the boom end, the wire converts to a rope block and tackle (3:1). Pulling down on the line, the boom goes up. On one side of the boom end, I've installed a cam cleat. The line is first seized off on this -- but only very temporarily. On the other side is a normal cleat for the more secure tie-off. The bottom end of the block and tackle is fitted with a snatch shackle. To give me a larger target to attach the snatch shackle, I installed a boom bail extending past the end of the boom. After I raise the sail, I unwrap the line from the standard cleat, then release it from the cam cleat. The boom drops a few inches to the natural sail support level. Then I pull the release line on the snap shackle and remove the topping lift assembly from the boom completely. On my port side split back stay, I've installed a cleat and eye. The topping lift is attached to that and tightened enough so it doesn't flop around during the sail. When sailing, the topping lift now is further aft than the leach/roach of the mainsail so I no longer have to bother with adjusting the thing all the time depending on sheeting angle and main sheet tension.
At the end of my sail and with the boat pointed into the wind for sail dowsing, the boom is centered and sheeted tight. The snap shackle is removed from the back stay cleat and re-attached to its boom fitting. The rope line is pulled tight through the cam cleat then brought over to the the standard cleat for full secure. The sail can then be lowered without the boom falling down.
Sounds a bit "Rube Goldberg", but it does work well in practice. The process takes but a few moments and is now part of the routine -- several hundred times now. And done from the safety of being in the cockpit.
As already mentioned -- there is no fussing with the topping lift during the sail. I recognize that in very light winds, one might raise the boom with the topping for better sail shape. But unless racing, or concerned about just a few minutes better performance during a normal day sail, my lack of this feature isn't much of a downside.