I'm a new owner of a Rover, and came up with a pedal solution to hold my stroke-weakened right foot...that could not deal with clipless pedals, or even Power Grips...both of which I had used in the past on my 2-wheelers before the stroke. I thought I'd be ok with Power Grips, and I am...if someone helps physically put my foot into them. I cannot manage the 'heel out' position to insert my foot under the strap. And I didn't want to risk riding and not having a way to put my foot back on the pedal. My wife, hearing about 'Foot Suck' (I think that's the term) was wary of me using my new toy (er, rehabilitation device) at all.
I saw one site had heel straps that attach to the pedal and cradle the back of your shoe. And that some feedback was if you hit a bump your foot could jump out and the sucky foot suck risk was back.
So I took a page from my rowing skull, which has old shoes bolted on for one to slip feet into.
I took an old pair of short motorcycle 4" or 6" boots. (No more motorcycling for me.) I then cut away the front top, leaving only the sole plate and heel counter, with a little extra so the remaining leather was U shaped around the heel. I strapped the shoe on the backside of my right power grip pedal, so others could still use the strap. It worked great! I just place my shoe against the cut down boot. The high back gives plenty of support and height to my heel that there was no bouncing out, even when I went over some sizable bumps at about 15mph.
This was CHEAP ($0), and if I didn't have a pair of boots to sacrifice I'd hit up my local Goodwill or thrift shop, where they can usually be had for about $5. I suggest short boots, as a regular shoe's heel may not have the stiffness or height to be useful. I thought the extra depth of the sole on the pedal, or the extra weight (the only drawback I can see) would result in unbalanced pedaling...but it wasn't bad. In fact to even things out tomorrow I am going to do the same on my good foot left pedal. Does it look funky? Yeah, but it works. And since I clip my 4-footed cane to springy mop-handle holders on the back, I won't be fooling anyone about being somewhat disabled anyway.
I hope this can be useful to other stroke survivors or those with a weak foot. If I can figure out how to add pictures I have 3 to add: The shoe I started with (er, actually the left boot I still have to add to the left.) The shoe cut down. pedaling with my right foot in the contraption.
My wife just had a good suggestion: adding velcro to the inside of the contraption, and the back of my cycling shoe, to minimize bouncing out even more.