I must admit that of all the tip rods I have, it does tend to be the case (in my opinion, of course) that one particular tip will suit the blank better than others. I have never felt that carbon and glass tips interchange well with a particular carrier section. Almost all my tip fishing takes place on the Trent, so I usually opt for a carbon tip. In heavy water conditions, I will use my Daiwa Porky Pig with the hollow tip section; for 'normal' conditions, I will use the heavy carbon push-in tip (about 4oz TC) on the Porky (I have an extra 'carrier' section) or 11/13. For lighter work, I have an old Tri Cast Trophy with a home made carbon push-over tip (home made because the glass ones provided didn't really suit the blank). Anyway, I digress...I think the answer would be to have say 3 carbon tips, made from an identical section of tapered carbon (chosen carefully to suit the blank), but cut at different lengths, say 26", 24" and 22" - so that the shorter the tip, the stiffer the action. The only 'problem' for some people would be the variation in length of the quivertips. As for glass tips, I simply don't need or use them; on a still water I'd rather use a swingtip for short/medium range (again, home made) - far more sensitive! If going a long chuck on a lake, I would use a carbon tip and tighten up as much as I could, and look for big drop-backs.