https://www.youtube.com/watch?v=nRqgLJYUSNA looks like it may need to be bigger takes hour and a half to cook ? maybe this focal point is better and can be directed at sun more.
solar hotdog cooker using tinfoil to reflect light. print 2 to make a trough or try with one ?
for 6" hotdogs makes a 14" solar trough. still need to make stand and try one. cover inside with tinfoil so the arms dont melt.
electric rotisserie soon option after depending how well it works ideally it would be nice to bubble the surface well.
you could use 3' aluminum flashing polished aswell or build larger 5 gal bucket version. depending how the taste is still need to prove concept.
had another project for making a flashlight hotdog cooker that uses battery to heat the hotdog up maybe even nichrome wire ?.
are solar cooked things more cancerous ?
https://www.youtube.com/watch?v=ZPeRKUYZnDQ solar cooker using jar