I have 7 different bass casting reels measured and all the feet measure about 2and 7/16" in length. PQ's, Revos , Shimanos,and such. If I wanted to go to a larger reel, how much bigger could I go before that footprint would increase? The subject in question is a light swim bait,  umbrella rig rod that may be used in saltwater sometime in the future and I don't want to cut the threads off too short may they be needed to accommodate a longer foot. Batson 8 ft. 2 pc. 1-4 0z   Pac Bay Minima seat. Thanks, Lynn

Unfortunately reel feet are not uniform across or even within brands. To be sure if find a sample reel at a store or something to measure. I usually end up taking about 3 threads off a typical reel seat and that leaves a little room. 

More than length comes into play here too.  I have old Chronarch SFs that have the same length foot as Curados, yet the Curado won't fit in the seat I cut for the Chronarch.   The Curado foot is thicker,  making a longer seat necessary. 

3 hours ago, S Hovanec said:

More than length comes into play here too.  I have old Chronarch SFs that have the same length foot as Curados, yet the Curado won't fit in the seat I cut for the Chronarch.   The Curado foot is thicker,  making a longer seat necessary. 

Good point. 

Thanks guys, I got a Fuji locknut for this seat to insure a little extra thread length. If need be my son can back it off the threads and tape or twist tie it to the blank in front of the seat while a larger reel is in use, if in fact one is ever used. Just wanted to give him a little added flexibility. Thanks again, Lynn