wasnt there a no fp version of imagine?
I have cover disk with Imagine 3 and it worked on my A2000 w/o FPU. The down side was that I had to run it in PAL mode on my NTSC machine, and because it used interlaced screen, it flickered a lot.
I also can vouch for Turbo Silver, my first 3D program for Amiga, and it was super slow on 7MHz 68000:hammer: , but it worked.