Hi Jim,
I've basically been doing no long rides in between my brevets and it's been working for me, but I have been riding really hard on my short commutes, which I think is key to this strategy.
This is my 19th year of doing endurance rides 200 miles+. For the first 16 years of this riding, for 100% of the rides, there was at least 1 time in the ride where I asked myself, "Why am I so stupid? What am I doing on this ride?" So there was at least one point in the ride where I was miserable.
For the last three years, not once did I have this reaction. What was the key to smooth, enjoyable rides for me? It is riding slower than my fastest tolerable pace. How did I achieve this?
1. Ride with someone who is slightly slower than you. You get the camaraderie and you never feel pushed.
2. Ride with someone who is stronger but is willing to push less to ride together. I've ridden with many kind friends who will slow pedal for a bit while I catch up on climbs. The worst thing you can do in this situation is go too hard on the climb to keep up with your friend, and then lose your legs and go really slowly on subsequent climbs. I make sure to stay very moderate on climbs to keep legs for the remainder of the ride.
3. Ride alone until the pace sorts itself out and you find someone who is well matched with your pace. The #1 mistake, which I have made many times, is to get too excited and go too fast at the beginning. Now, I go into the ride with the mindset that I can ride on my own at my own pace and it's ok if I get "left behind". I've always been fortunate to find riders at a similar pace as nightfall comes. There's a willingness and interest in riding together in a group at night for safety and companionship.
4. Keeping fed. Some of this must come from experience--what tastes good when you are tired from riding all day? In order to eat well, I have found that my pace and level of effort needs to be in a moderate zone. If I go too hard, my stomach gets uneasy. For my first 600k I went too fast and got gastric reflux and had stomach trouble. The longer the ride, the more religiously I stick to my comfort zone, and the easier it is to eat more types of food.
I do a mix of powders for my bottle and real food. I have a homemade perpetuem powder: (375 g maltodextrin, 83 g whey or soy protein, 42 g soy or sunflower lecithin)
When I get tired of this mix, I also drink this sweeter version with fructose and citric acid. I think of it as a homemade skratch labs long-distance version: 360g maltodextrin, 60-180g fructose, 6-18 g citric acid. I found that 120g fructose and 12 g citric acid give a good sweetness and sourness consistency, but you can adjust to your own taste. (It will also depend upon how many scoops you put in your bottle too. I usually use 2-3 scoops worth for 24 oz)
I love my rice rolls: rice, eggs, chicken-apple sausage + soy sauce to taste, wrapped in seaweed (or plastic wrap/aluminum foil if preferred), skratch lab recipe adds sugar, but I don't use it.
When the rice rolls run out, for me: salted mixed nuts and Lara bars-unwrapped and placed in the top tube bag (unwrapping bars beforehand makes it easy to just grab and eat right away). I made some good homemade date and nut bars, but for now, I just decided to buy Larabars and eat mixed nuts.
Any time I feel hunger coming on, I reach into my top tube bag and eat food. If it's not a good situation for eating, I will drink from my powdered mix bottle. I start the ride with 7 scoops of powder in one bottle, but refill with 2-3 scoops per bottle. Every stop light or opportunity, I will try to remember to eat food.
I try to carry enough food to last the whole ride, so I can make very quick stops to just fill up my water bottle and go on. Minimizing stopped time is a great way to have an efficient ride (i.e. more sleep!!!)
Good luck!
Toshi