So, I've seen the draw length/limb+riser charts for ILF, and the mfg info for my Bosen longbow limbs (long 62"-17" riser) was not quite as generous; meaning I should keep the long/17 combo for my 28.5" draw length...
Question: If I can draw this bow to 29.5/30" before stacking, do you think it will stack on a 15" riser?

Thanks all, and Happy Thanksgiving!

ILF risers for traditional bows are commonly made in 17-21" lengths. Longer than that gets into bare bow categories; shorter gets into experimental categories. If I were interested in a 15" ILF riser, I would want to try one myself before buying, or at least buy from some source that was known to allow returns in case it didn't work out like I expected.

"Experimental".  Sounds about right...VPA makes them down to 13" but I don't even like a metal riser below 50 degrees.  Actionwood ones on Amazon for roughly $100 without side adjustments(hmmm).  Might have to buy one and sell for cheap if it doesn't work out.  Probably would need to do some string groove or tiller adjust for centerline.