I tend not to worry and just let them get wet. If i'm close to camp or there's only one crossing that naturally aligns with a break, i may change shoes to save drying a set of socks, but mostly “plow right in”
….This wasn't alway the case though, so I’ll detail my personal observations (i started high km/day trekking about 12 months ago)
I started by using some heavy Helly Hansen winter boots (that i thought would be great for South America - urgh) Using since 2009, they were well worn in.
Pro
. ankle support; having a safety buffer in the night if i misplace a foot / out shooting and want to keep eye on a target
. waterproof up to ~100mm
. some snake bite protection
. toe protection for stubbing
Con
. heavy, 860g each
. being waterproof up to 100mm means once wet, they will never dry over a multi-day hike
(0700h morning trek up Feathertop, all the morning dew from tall grasses ran down my legs and while feeling amazing, filled the boots with water to the equiv of dunking them in water. They didn't dry)
. they CONSIDERABLY heavier when wet
. hard wearing boots have zero traction on wet / smooth rock
. non flexible soles don’t shed dried mud from the cleats
. with thick wool socks and liners, i lost a nail and blackened 3 others(probably a fit issue so maybe not worth mentioning)
I then started using my old cross trainers (5yr old ASIC $100 somethings)
Pro
. light, 390g each
. faster draining
. better traction on wet / smooth rock
Con
. zero ankle support
. less traction than boot on mud (and pretty much all other surfaces) due to shorter cleats and sole pattern
. thinner sole; arch pain from stone strikes
Now im on trail runners (La Sportiva Wildcat 3)
Pro
. ridiculous traction in all conditions; i averaged 5.5km/h while night trekking into Sealers Cove in the rain with a 17kg pack
. stone plate prevents strikes
. greater overall rigidity in “lower”
. faster draining than runner
Con
. heavier than runner at 416g each
. soft lugs that bite through mud and cling on wet / smooth rocks will wear flat quicker on hard 4WD trails, losing effectiveness
So to directly answer your question, with fast draining shoes and good woolen socks and liners, i have no problems having them soaked as the shoe drains quickly and the sock retains structure (no blister) and warmth - bring it on.
Other thoughts
Shoe type - I find it hard to imagine ever going back to a boot. With the UL thing going on, is the support needed? If a youth of soccer and rugby has damaged ur ankles, this option might not be for you.
Blisters - I've found this transformation particulary amazing. I watched blisters on my heals appear and go twice, then never return. I then watched blisters on large toe appear once, then never return. I had a 3cmx3cm blister on the entire ball of my foot appear then heal. 5wks later when it appeared again after a 40km/36h trek, I cut into 3-4mm of skin to drain – never returned.
I recently blitzed around the southern Prom loop, carpark > Sealers > Waterloo > carpark in 15hours (34km) and instead of abrasion blisters, got these “hoops” 10mm above both heals where the thick skin meets the thinner.
So after 10 night hikes and another 10 fast 25km@5.5km/h day hikes over 12 months in -3-40c temps, dry and SOAKED, i feel my feet have increased greatly in terms of robustness = maybe as time goes on, ur wet feet won't bother you.
Maintenance - Im barefoot around the house and in thongs at almost all non-formal occasions in summer. When i get to camp, I wear thongs (year round) to let my feet dry out. I feel this is super important for feet health though am not sure if this is proven.
Random - Shoes that are too tight or just shoes in general, limit the amount of proprioceptive feedback from your feet to your brain. This lack of feedback has been shown to decrease the amount of weight an olympic lifter “feels” they can lift. This data alone, kicked off a craze of people weight training with no shoes.
If the above is true, are your over tight boots or shoes preventing you from banging out that last 5km / ascending that last 100m?
In closing , the last year of trekking has raised the bar of copable personal discomfort far above a childhood of triathlons, slow ADSL speeds and itchy woolen jumpers from grandma.
Where once wet shoes were a flood of memories of being 13 years old on a Scouts trip in 5 day old socks and tinea, it now doesn't phase me in the least.
Wet feet don’t necessarily equate to blisters or odour, they’re simply a state between now, and the end of the day with dry camp socks, hot food and hard liquor.
EDIT: Iv only done 3 season